21602762898 has 16 divisors (see below), whose sum is σ = 43333736160. Its totient is φ = 7179552576.

The previous prime is 21602762887. The next prime is 21602762921. The reversal of 21602762898 is 89826720612.

It is a self number, because there is not a number n which added to its sum of digits gives 21602762898.

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, 5339908 + ... + 5343951.

It is an arithmetic number, because the mean of its divisors is an integer number (2708358510).

Almost surely, 2^21602762898 is an apocalyptic number.

21602762898 is an abundant number, since it is smaller than the sum of its proper divisors (21730973262).

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

21602762898 is a wasteful number, since it uses less digits than its factorization.

21602762898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10684201.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 21602762898 in words is "twenty-one billion, six hundred two million, seven hundred sixty-two thousand, eight hundred ninety-eight".