21477434331352 has 16 divisors (see below), whose sum is σ = 40577595399000. Its totient is φ = 10656742224960.

The previous prime is 21477434331349. The next prime is 21477434331383. The reversal of 21477434331352 is 25313343477412.

It is a super-2 number, since 2×21477434331352² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21477434331296 and 21477434331305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10246866477 + ... + 10246868572.

Almost surely, 2^{21477434331352} is an apocalyptic number.

It is an amenable number.

21477434331352 is a deficient number, since it is larger than the sum of its proper divisors (19100161067648).

21477434331352 is a wasteful number, since it uses less digits than its factorization.

21477434331352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20493735186 (or 20493735182 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 49.

The spelling of 21477434331352 in words is "twenty-one trillion, four hundred seventy-seven billion, four hundred thirty-four million, three hundred thirty-one thousand, three hundred fifty-two".