21374404265052 has 72 divisors (see below), whose sum is σ = 54181390536000. Its totient is φ = 7104807272448.

The previous prime is 21374404265023. The next prime is 21374404265077. The reversal of 21374404265052 is 25056240447312.

21374404265052 is a `hidden beast` number, since 2 + 13 + 74 + 40 + 4 + 26 + 505 + 2 = 666.

It is a super-3 number, since 3×21374404265052³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21374404264989 and 21374404265007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180271324 + ... + 180389852.

It is an arithmetic number, because the mean of its divisors is an integer number (752519313000).

Almost surely, 2^{21374404265052} is an apocalyptic number.

It is an amenable number.

21374404265052 is an abundant number, since it is smaller than the sum of its proper divisors (32806986270948).

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

21374404265052 is a wasteful number, since it uses less digits than its factorization.

21374404265052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132555 (or 132550 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 45.

The spelling of 21374404265052 in words is "twenty-one trillion, three hundred seventy-four billion, four hundred four million, two hundred sixty-five thousand, fifty-two".