20570964273 has 12 divisors (see below), whose sum is σ = 31005511680. Its totient is φ = 13117716216.

The previous prime is 20570964233. The next prime is 20570964301. The reversal of 20570964273 is 37246907502.

20570964273 is a `hidden beast` number, since 2 + 0 + 570 + 9 + 6 + 4 + 2 + 73 = 666.

It is not a de Polignac number, because 20570964273 - 2⁶ = 20570964209 is a prime.

It is a super-2 number, since 2×20570964273² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20570964233) 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, 49688113 + ... + 49688526.

It is an arithmetic number, because the mean of its divisors is an integer number (2583792640).

Almost surely, 2^20570964273 is an apocalyptic number.

20570964273 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20570964273 is a deficient number, since it is larger than the sum of its proper divisors (10434547407).

20570964273 is a wasteful number, since it uses less digits than its factorization.

20570964273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99376668 (or 99376665 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 20570964273 in words is "twenty billion, five hundred seventy million, nine hundred sixty-four thousand, two hundred seventy-three".