21197842962 has 16 divisors (see below), whose sum is σ = 42398227872. Its totient is φ = 7065524000.

The previous prime is 21197842949. The next prime is 21197842973. The reversal of 21197842962 is 26924879112.

It is a super-2 number, since 2×21197842962² (a number of 21 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, 12718 + ... + 206294.

It is an arithmetic number, because the mean of its divisors is an integer number (2649889242).

Almost surely, 2^21197842962 is an apocalyptic number.

21197842962 is an abundant number, since it is smaller than the sum of its proper divisors (21200384910).

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

21197842962 is a wasteful number, since it uses less digits than its factorization.

21197842962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211833.

The product of its digits is 870912, while the sum is 51.

The spelling of 21197842962 in words is "twenty-one billion, one hundred ninety-seven million, eight hundred forty-two thousand, nine hundred sixty-two".