20760172806 has 16 divisors (see below), whose sum is σ = 43705627200. Its totient is φ = 6555844008.

The previous prime is 20760172799. The next prime is 20760172813. The reversal of 20760172806 is 60827106702.

It is an interprime number because it is at equal distance from previous prime (20760172799) and next prime (20760172813).

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, 91053276 + ... + 91053503.

It is an arithmetic number, because the mean of its divisors is an integer number (2731601700).

Almost surely, 2^20760172806 is an apocalyptic number.

20760172806 is an abundant number, since it is smaller than the sum of its proper divisors (22945454394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20760172806 is a wasteful number, since it uses less digits than its factorization.

20760172806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182106803.

The product of its (nonzero) digits is 56448, while the sum is 39.

The spelling of 20760172806 in words is "twenty billion, seven hundred sixty million, one hundred seventy-two thousand, eight hundred six".