15738991401660 has 48 divisors (see below), whose sum is σ = 44142502441632. Its totient is φ = 4190080896000.

The previous prime is 15738991401613. The next prime is 15738991401677. The reversal of 15738991401660 is 6610419983751.

It is a super-2 number, since 2×15738991401660² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 15738991401594 and 15738991401603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218197321 + ... + 218269440.

It is an arithmetic number, because the mean of its divisors is an integer number (919635467534).

Almost surely, 2^{15738991401660} is an apocalyptic number.

15738991401660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15738991401660 is an abundant number, since it is smaller than the sum of its proper divisors (28403511039972).

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

15738991401660 is a wasteful number, since it uses less digits than its factorization.

15738991401660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436467374 (or 436467372 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 15738991401660 in words is "fifteen trillion, seven hundred thirty-eight billion, nine hundred ninety-one million, four hundred one thousand, six hundred sixty".