40387510625408 has 16 divisors (see below), whose sum is σ = 80459493824310. Its totient is φ = 20193755312640.

The previous prime is 40387510625401. The next prime is 40387510625419. The reversal of 40387510625408 is 80452601578304.

It can be written as a sum of positive squares in only one way, i.e., 38215046876224 + 2172463749184 = 6181832^2 + 1473928^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 40387510625408.

It is not an unprimeable number, because it can be changed into a prime (40387510625401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157763713253 + ... + 157763713508.

Almost surely, 2^{40387510625408} is an apocalyptic number.

It is an amenable number.

40387510625408 is a deficient number, since it is larger than the sum of its proper divisors (40071983198902).

40387510625408 is an equidigital number, since it uses as much as digits as its factorization.

40387510625408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315527426775 (or 315527426763 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 40387510625408 in words is "forty trillion, three hundred eighty-seven billion, five hundred ten million, six hundred twenty-five thousand, four hundred eight".