21462858472152 has 16 divisors (see below), whose sum is σ = 53657146180440. Its totient is φ = 7154286157376.

The previous prime is 21462858472141. The next prime is 21462858472169. The reversal of 21462858472152 is 25127485826412.

It is a happy number.

It is a super-2 number, since 2×21462858472152² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21462858472092 and 21462858472101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447142884813 + ... + 447142884860.

Almost surely, 2^{21462858472152} is an apocalyptic number.

It is an amenable number.

21462858472152 is an abundant number, since it is smaller than the sum of its proper divisors (32194287708288).

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

21462858472152 is a wasteful number, since it uses less digits than its factorization.

21462858472152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894285769682 (or 894285769678 counting only the distinct ones).

The product of its digits is 17203200, while the sum is 57.

The spelling of 21462858472152 in words is "twenty-one trillion, four hundred sixty-two billion, eight hundred fifty-eight million, four hundred seventy-two thousand, one hundred fifty-two".