40604351640 has 64 divisors (see below), whose sum is σ = 124784120160. Its totient is φ = 10563732480.

The previous prime is 40604351629. The next prime is 40604351657. The reversal of 40604351640 is 4615340604.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 4121539 + ... + 4131378.

Almost surely, 2^40604351640 is an apocalyptic number.

40604351640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40604351640 is an abundant number, since it is smaller than the sum of its proper divisors (84179768520).

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

40604351640 is a wasteful number, since it uses less digits than its factorization.

40604351640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8252972 (or 8252968 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The spelling of 40604351640 in words is "forty billion, six hundred four million, three hundred fifty-one thousand, six hundred forty".