20974325697 has 24 divisors (see below), whose sum is σ = 32647078464. Its totient is φ = 12899227104.

The previous prime is 20974325689. The next prime is 20974325707. The reversal of 20974325697 is 79652347902.

20974325697 is a `hidden beast` number, since 2 + 0 + 9 + 74 + 3 + 2 + 569 + 7 = 666.

It is not a de Polignac number, because 20974325697 - 2³ = 20974325689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20974324697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135268 + ... + 245450.

It is an arithmetic number, because the mean of its divisors is an integer number (1360294936).

Almost surely, 2^20974325697 is an apocalyptic number.

It is an amenable number.

20974325697 is a deficient number, since it is larger than the sum of its proper divisors (11672752767).

20974325697 is a wasteful number, since it uses less digits than its factorization.

20974325697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111829 (or 111826 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The spelling of 20974325697 in words is "twenty billion, nine hundred seventy-four million, three hundred twenty-five thousand, six hundred ninety-seven".