21470546673171 has 12 divisors (see below), whose sum is σ = 31221152882400. Its totient is φ = 14217632695440.

The previous prime is 21470546673161. The next prime is 21470546673179. The reversal of 21470546673171 is 17137664507412.

21470546673171 is a `hidden beast` number, since 2 + 1 + 4 + 7 + 0 + 5 + 466 + 7 + 3 + 171 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-21470546673171 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (21470546673179) 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, 8005422475 + ... + 8005425156.

It is an arithmetic number, because the mean of its divisors is an integer number (2601762740200).

Almost surely, 2^{21470546673171} is an apocalyptic number.

21470546673171 is a deficient number, since it is larger than the sum of its proper divisors (9750606209229).

21470546673171 is a wasteful number, since it uses less digits than its factorization.

21470546673171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16010847786 (or 16010847783 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 54.

The spelling of 21470546673171 in words is "twenty-one trillion, four hundred seventy billion, five hundred forty-six million, six hundred seventy-three thousand, one hundred seventy-one".