21470553016173 has 48 divisors (see below), whose sum is σ = 32443141610880. Its totient is φ = 13656798916992.

The previous prime is 21470553016111. The next prime is 21470553016259. The reversal of 21470553016173 is 37161035507412.

21470553016173 is a `hidden beast` number, since 2 + 1 + 4 + 70 + 553 + 0 + 16 + 17 + 3 = 666.

It is not a de Polignac number, because 21470553016173 - 2¹⁴ = 21470552999789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21470553066173) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 896200111 + ... + 896224067.

It is an arithmetic number, because the mean of its divisors is an integer number (675898783560).

Almost surely, 2^{21470553016173} is an apocalyptic number.

21470553016173 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21470553016173 is a deficient number, since it is larger than the sum of its proper divisors (10972588594707).

21470553016173 is a wasteful number, since it uses less digits than its factorization.

21470553016173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34738 (or 34735 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 21470553016173 in words is "twenty-one trillion, four hundred seventy billion, five hundred fifty-three million, sixteen thousand, one hundred seventy-three".