21619872002592 has 120 divisors (see below), whose sum is σ = 63600000399936. Its totient is φ = 7204747367808.

The previous prime is 21619872002563. The next prime is 21619872002609. The reversal of 21619872002592 is 29520027891612.

21619872002592 is a `hidden beast` number, since 2 + 16 + 19 + 8 + 7 + 20 + 0 + 2 + 592 = 666.

It is a super-2 number, since 2×21619872002592² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 19 ways as a sum of consecutive naturals, for example, 8887333 + ... + 11055515.

Almost surely, 2^{21619872002592} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21619872002592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31800000199968).

21619872002592 is an abundant number, since it is smaller than the sum of its proper divisors (41980128397344).

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

21619872002592 is a wasteful number, since it uses less digits than its factorization.

21619872002592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172052 (or 2172035 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 21619872002592 in words is "twenty-one trillion, six hundred nineteen billion, eight hundred seventy-two million, two thousand, five hundred ninety-two".