20774718718 has 8 divisors (see below), whose sum is σ = 33559161048. Its totient is φ = 9588331704.

The previous prime is 20774718707. The next prime is 20774718773. The reversal of 20774718718 is 81781747702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399513796 + ... + 399513847.

It is an arithmetic number, because the mean of its divisors is an integer number (4194895131).

Almost surely, 2^20774718718 is an apocalyptic number.

20774718718 is a deficient number, since it is larger than the sum of its proper divisors (12784442330).

20774718718 is a wasteful number, since it uses less digits than its factorization.

20774718718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799027658.

The product of its (nonzero) digits is 1229312, while the sum is 52.

The spelling of 20774718718 in words is "twenty billion, seven hundred seventy-four million, seven hundred eighteen thousand, seven hundred eighteen".