40635767776640 has 64 divisors (see below), whose sum is σ = 98036119962000. Its totient is φ = 16105184999424.

The previous prime is 40635767776619. The next prime is 40635767776651. The reversal of 40635767776640 is 4667776753604.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291184310 + ... + 291323829.

Almost surely, 2^{40635767776640} is an apocalyptic number.

40635767776640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40635767776640 is an abundant number, since it is smaller than the sum of its proper divisors (57400352185360).

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

40635767776640 is a wasteful number, since it uses less digits than its factorization.

40635767776640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582508267 (or 582508255 counting only the distinct ones).

The product of its (nonzero) digits is 746807040, while the sum is 68.

The spelling of 40635767776640 in words is "forty trillion, six hundred thirty-five billion, seven hundred sixty-seven million, seven hundred seventy-six thousand, six hundred forty".