21756244362162 has 16 divisors (see below), whose sum is σ = 44225808212352. Its totient is φ = 7133194872720.

The previous prime is 21756244362133. The next prime is 21756244362191. The reversal of 21756244362162 is 26126344265712.

It is an interprime number because it is at equal distance from previous prime (21756244362133) and next prime (21756244362191).

It is a super-2 number, since 2×21756244362162² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29721644938 + ... + 29721645669.

It is an arithmetic number, because the mean of its divisors is an integer number (2764113013272).

Almost surely, 2^{21756244362162} is an apocalyptic number.

21756244362162 is an abundant number, since it is smaller than the sum of its proper divisors (22469563850190).

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

21756244362162 is a wasteful number, since it uses less digits than its factorization.

21756244362162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59443290673.

The product of its digits is 5806080, while the sum is 51.

The spelling of 21756244362162 in words is "twenty-one trillion, seven hundred fifty-six billion, two hundred forty-four million, three hundred sixty-two thousand, one hundred sixty-two".