21404664075300 has 72 divisors (see below), whose sum is σ = 67560903346272. Its totient is φ = 5189009472000.

The previous prime is 21404664075239. The next prime is 21404664075317. The reversal of 21404664075300 is 357046640412.

It is a happy number.

It is a super-3 number, since 3×21404664075300³ (a number of 41 digits) contains 333 as substring.

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, 3243127621 + ... + 3243134220.

Almost surely, 2^{21404664075300} is an apocalyptic number.

21404664075300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21404664075300 is an abundant number, since it is smaller than the sum of its proper divisors (46156239270972).

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

21404664075300 is a wasteful number, since it uses less digits than its factorization.

21404664075300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6486261869 (or 6486261862 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 21404664075300 in words is "twenty-one trillion, four hundred four billion, six hundred sixty-four million, seventy-five thousand, three hundred".