40168623534440 has 64 divisors (see below), whose sum is σ = 95629147732800. Its totient is φ = 15142924726272.

The previous prime is 40168623534341. The next prime is 40168623534451. The reversal of 40168623534440 is 4443532686104.

It is a super-2 number, since 2×40168623534440² (a number of 28 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 136779362 + ... + 137072721.

It is an arithmetic number, because the mean of its divisors is an integer number (1494205433325).

Almost surely, 2^{40168623534440} is an apocalyptic number.

40168623534440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40168623534440 is an abundant number, since it is smaller than the sum of its proper divisors (55460524198360).

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

40168623534440 is a wasteful number, since it uses less digits than its factorization.

40168623534440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273852306 (or 273852302 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 50.

The spelling of 40168623534440 in words is "forty trillion, one hundred sixty-eight billion, six hundred twenty-three million, five hundred thirty-four thousand, four hundred forty".