20697872294 has 16 divisors (see below), whose sum is σ = 33895526976. Its totient is φ = 9400823400.

The previous prime is 20697872287. The next prime is 20697872311. The reversal of 20697872294 is 49227879602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335972 + ... + 392775.

It is an arithmetic number, because the mean of its divisors is an integer number (2118470436).

Almost surely, 2^20697872294 is an apocalyptic number.

20697872294 is a deficient number, since it is larger than the sum of its proper divisors (13197654682).

20697872294 is a wasteful number, since it uses less digits than its factorization.

20697872294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730051.

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 20697872294 in words is "twenty billion, six hundred ninety-seven million, eight hundred seventy-two thousand, two hundred ninety-four".