40687388394 has 16 divisors (see below), whose sum is σ = 81377763168. Its totient is φ = 13561965072.

The previous prime is 40687388389. The next prime is 40687388419. The reversal of 40687388394 is 49388378604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78024 + ... + 295740.

It is an arithmetic number, because the mean of its divisors is an integer number (5086110198).

Almost surely, 2^40687388394 is an apocalyptic number.

40687388394 is an abundant number, since it is smaller than the sum of its proper divisors (40690374774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40687388394 is a wasteful number, since it uses less digits than its factorization.

40687388394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248869.

The product of its (nonzero) digits is 27869184, while the sum is 60.

The spelling of 40687388394 in words is "forty billion, six hundred eighty-seven million, three hundred eighty-eight thousand, three hundred ninety-four".