15940944515008 has 28 divisors (see below), whose sum is σ = 31694958814680. Its totient is φ = 7954813160192.

The previous prime is 15940944514987. The next prime is 15940944515009. The reversal of 15940944515008 is 80051544904951.

It is a super-2 number, since 2×15940944515008² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15940944515008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15940944515009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244640566 + ... + 244705717.

It is an arithmetic number, because the mean of its divisors is an integer number (1131962814810).

Almost surely, 2^{15940944515008} is an apocalyptic number.

It is an amenable number.

15940944515008 is a deficient number, since it is larger than the sum of its proper divisors (15754014299672).

15940944515008 is an equidigital number, since it uses as much as digits as its factorization.

15940944515008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489346804 (or 489346794 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 55.

The spelling of 15940944515008 in words is "fifteen trillion, nine hundred forty billion, nine hundred forty-four million, five hundred fifteen thousand, eight".