40878642764 has 12 divisors (see below), whose sum is σ = 71965995024. Its totient is φ = 20316929904.

The previous prime is 40878642719. The next prime is 40878642769. The reversal of 40878642764 is 46724687804.

It is not an unprimeable number, because it can be changed into a prime (40878642769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30597119 + ... + 30598454.

It is an arithmetic number, because the mean of its divisors is an integer number (5997166252).

Almost surely, 2^40878642764 is an apocalyptic number.

It is an amenable number.

40878642764 is a deficient number, since it is larger than the sum of its proper divisors (31087352260).

40878642764 is a wasteful number, since it uses less digits than its factorization.

40878642764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61195744 (or 61195742 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 56.

The spelling of 40878642764 in words is "forty billion, eight hundred seventy-eight million, six hundred forty-two thousand, seven hundred sixty-four".