20597526971 has 16 divisors (see below), whose sum is σ = 23597537280. Its totient is φ = 17611953120.

The previous prime is 20597526953. The next prime is 20597526977. The reversal of 20597526971 is 17962579502.

It is a cyclic number.

It is not a de Polignac number, because 20597526971 - 2⁶ = 20597526907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20597526977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7378586 + ... + 7381376.

It is an arithmetic number, because the mean of its divisors is an integer number (1474846080).

Almost surely, 2^20597526971 is an apocalyptic number.

20597526971 is a deficient number, since it is larger than the sum of its proper divisors (3000010309).

20597526971 is a wasteful number, since it uses less digits than its factorization.

20597526971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4994.

The product of its (nonzero) digits is 2381400, while the sum is 53.

The spelling of 20597526971 in words is "twenty billion, five hundred ninety-seven million, five hundred twenty-six thousand, nine hundred seventy-one".