40977981815 has 24 divisors (see below), whose sum is σ = 52090003008. Its totient is φ = 30942025920.

The previous prime is 40977981769. The next prime is 40977981827. The reversal of 40977981815 is 51818977904.

It is not a de Polignac number, because 40977981815 - 2³⁴ = 23798112631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 447269 + ... + 531041.

It is an arithmetic number, because the mean of its divisors is an integer number (2170416792).

Almost surely, 2^40977981815 is an apocalyptic number.

40977981815 is a deficient number, since it is larger than the sum of its proper divisors (11112021193).

40977981815 is a wasteful number, since it uses less digits than its factorization.

40977981815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84087 (or 84068 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 59.

The spelling of 40977981815 in words is "forty billion, nine hundred seventy-seven million, nine hundred eighty-one thousand, eight hundred fifteen".