20471513517153 has 32 divisors (see below), whose sum is σ = 30338436401280. Its totient is φ = 13643055990720.

The previous prime is 20471513517137. The next prime is 20471513517187. The reversal of 20471513517153 is 35171531517402.

20471513517153 is a `hidden beast` number, since 2 + 0 + 4 + 71 + 5 + 13 + 517 + 1 + 53 = 666.

It is not a de Polignac number, because 20471513517153 - 2⁴ = 20471513517137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20471513517099 and 20471513517108.

It is not an unprimeable number, because it can be changed into a prime (20471513517353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1623299818 + ... + 1623312428.

It is an arithmetic number, because the mean of its divisors is an integer number (948076137540).

Almost surely, 2^{20471513517153} is an apocalyptic number.

It is an amenable number.

20471513517153 is a deficient number, since it is larger than the sum of its proper divisors (9866922884127).

20471513517153 is a wasteful number, since it uses less digits than its factorization.

20471513517153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28206 (or 28200 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 45.

The spelling of 20471513517153 in words is "twenty trillion, four hundred seventy-one billion, five hundred thirteen million, five hundred seventeen thousand, one hundred fifty-three".