72463612541 has 4 divisors (see below), whose sum is σ = 72491304732. Its totient is φ = 72435920352.

The previous prime is 72463612537. The next prime is 72463612561. The reversal of 72463612541 is 14521636427.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54462023641 + 18001588900 = 233371^2 + 134170^2 .

It is a cyclic number.

It is not a de Polignac number, because 72463612541 - 2² = 72463612537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72463612561) 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, 13842170 + ... + 13847403.

It is an arithmetic number, because the mean of its divisors is an integer number (18122826183).

Almost surely, 2^72463612541 is an apocalyptic number.

It is an amenable number.

72463612541 is a deficient number, since it is larger than the sum of its proper divisors (27692191).

72463612541 is a wasteful number, since it uses less digits than its factorization.

72463612541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27692190.

The product of its digits is 241920, while the sum is 41.

The spelling of 72463612541 in words is "seventy-two billion, four hundred sixty-three million, six hundred twelve thousand, five hundred forty-one".