21124151160516 has 72 divisors (see below), whose sum is σ = 55445196395680. Its totient is φ = 7032436345152.

The previous prime is 21124151160509. The next prime is 21124151160521. The reversal of 21124151160516 is 61506115142112.

21124151160516 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 41 + 5 + 1 + 1 + 605 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13042321 + ... + 14572248.

Almost surely, 2^{21124151160516} is an apocalyptic number.

It is an amenable number.

21124151160516 is an abundant number, since it is smaller than the sum of its proper divisors (34321045235164).

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

21124151160516 is a wasteful number, since it uses less digits than its factorization.

21124151160516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27615375 (or 27615361 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The spelling of 21124151160516 in words is "twenty-one trillion, one hundred twenty-four billion, one hundred fifty-one million, one hundred sixty thousand, five hundred sixteen".