20779375167 has 12 divisors (see below), whose sum is σ = 30026156160. Its totient is φ = 13847607648.

The previous prime is 20779375163. The next prime is 20779375171. The reversal of 20779375167 is 76157397702.

20779375167 is a `hidden beast` number, since 20 + 7 + 79 + 37 + 516 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (20779375163) and next prime (20779375171).

It is not a de Polignac number, because 20779375167 - 2² = 20779375163 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20779375163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 417567 + ... + 464672.

It is an arithmetic number, because the mean of its divisors is an integer number (2502179680).

Almost surely, 2^20779375167 is an apocalyptic number.

20779375167 is a deficient number, since it is larger than the sum of its proper divisors (9246780993).

20779375167 is a wasteful number, since it uses less digits than its factorization.

20779375167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884862 (or 884859 counting only the distinct ones).

The product of its (nonzero) digits is 3889620, while the sum is 54.

The spelling of 20779375167 in words is "twenty billion, seven hundred seventy-nine million, three hundred seventy-five thousand, one hundred sixty-seven".