45004078457 has 4 divisors (see below), whose sum is σ = 48465930660. Its totient is φ = 41542226256.

The previous prime is 45004078439. The next prime is 45004078463. The reversal of 45004078457 is 75487040054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75487040054 = 2 ⋅37743520027.

It can be written as a sum of positive squares in 2 ways, for example, as 6578669881 + 38425408576 = 81109^2 + 196024^2 .

It is a cyclic number.

It is not a de Polignac number, because 45004078457 - 2⁸ = 45004078201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45004078057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1730926082 + ... + 1730926107.

It is an arithmetic number, because the mean of its divisors is an integer number (12116482665).

Almost surely, 2^45004078457 is an apocalyptic number.

It is an amenable number.

45004078457 is a deficient number, since it is larger than the sum of its proper divisors (3461852203).

45004078457 is a wasteful number, since it uses less digits than its factorization.

45004078457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3461852202.

The product of its (nonzero) digits is 627200, while the sum is 44.

The spelling of 45004078457 in words is "forty-five billion, four million, seventy-eight thousand, four hundred fifty-seven".