21751260313400 has 48 divisors (see below), whose sum is σ = 50572540549800. Its totient is φ = 8700356113280.

The previous prime is 21751260313351. The next prime is 21751260313421. The reversal of 21751260313400 is 431306215712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11261114 + ... + 13050486.

Almost surely, 2^{21751260313400} is an apocalyptic number.

21751260313400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21751260313400 is an abundant number, since it is smaller than the sum of its proper divisors (28821280236400).

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

21751260313400 is a wasteful number, since it uses less digits than its factorization.

21751260313400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850168 (or 1850159 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 21751260313400 in words is "twenty-one trillion, seven hundred fifty-one billion, two hundred sixty million, three hundred thirteen thousand, four hundred".