21602426300400 has 120 divisors (see below), whose sum is σ = 75490660681344. Its totient is φ = 5236951827200.

The previous prime is 21602426300303. The next prime is 21602426300407. The reversal of 21602426300400 is 400362420612.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21602426300407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 818260524 + ... + 818286923.

Almost surely, 2^{21602426300400} is an apocalyptic number.

21602426300400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21602426300400 is an abundant number, since it is smaller than the sum of its proper divisors (53888234380944).

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

21602426300400 is a wasteful number, since it uses less digits than its factorization.

21602426300400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636547479 (or 1636547468 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 21602426300400 in words is "twenty-one trillion, six hundred two billion, four hundred twenty-six million, three hundred thousand, four hundred".