20197885359 has 32 divisors (see below), whose sum is σ = 27960311808. Its totient is φ = 12955644000.

The previous prime is 20197885349. The next prime is 20197885397. The reversal of 20197885359 is 95358879102.

It is not a de Polignac number, because 20197885359 - 2⁷ = 20197885231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20197885299 and 20197885308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20197885349) 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, 16514422 + ... + 16515644.

It is an arithmetic number, because the mean of its divisors is an integer number (873759744).

Almost surely, 2^20197885359 is an apocalyptic number.

20197885359 is a deficient number, since it is larger than the sum of its proper divisors (7762426449).

20197885359 is a wasteful number, since it uses less digits than its factorization.

20197885359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139.

The product of its (nonzero) digits is 5443200, while the sum is 57.

The spelling of 20197885359 in words is "twenty billion, one hundred ninety-seven million, eight hundred eighty-five thousand, three hundred fifty-nine".