21074760022400 has 96 divisors (see below), whose sum is σ = 59498563626480. Its totient is φ = 7225632000000.

The previous prime is 21074760022373. The next prime is 21074760022409. The reversal of 21074760022400 is 422006747012.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21074760022409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 470396351 + ... + 470441150.

Almost surely, 2^{21074760022400} is an apocalyptic number.

21074760022400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21074760022400 is an abundant number, since it is smaller than the sum of its proper divisors (38423803604080).

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

21074760022400 is an equidigital number, since it uses as much as digits as its factorization.

21074760022400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940837532 (or 940837515 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

Adding to 21074760022400 its reverse (422006747012), we get a palindrome (21496766769412).

The spelling of 21074760022400 in words is "twenty-one trillion, seventy-four billion, seven hundred sixty million, twenty-two thousand, four hundred".