40118476391 has 4 divisors (see below), whose sum is σ = 45849687312. Its totient is φ = 34387265472.

The previous prime is 40118476367. The next prime is 40118476393. The reversal of 40118476391 is 19367481104.

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

It is not a de Polignac number, because 40118476391 - 2¹⁰ = 40118475367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40118476393) 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, 2865605450 + ... + 2865605463.

It is an arithmetic number, because the mean of its divisors is an integer number (11462421828).

Almost surely, 2^40118476391 is an apocalyptic number.

40118476391 is a deficient number, since it is larger than the sum of its proper divisors (5731210921).

40118476391 is an equidigital number, since it uses as much as digits as its factorization.

40118476391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5731210920.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 40118476391 in words is "forty billion, one hundred eighteen million, four hundred seventy-six thousand, three hundred ninety-one".