20356772051 has 8 divisors (see below), whose sum is σ = 25379871744. Its totient is φ = 15862419720.

The previous prime is 20356772041. The next prime is 20356772057. The reversal of 20356772051 is 15027765302.

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

It is not a de Polignac number, because 20356772051 - 2⁶ = 20356771987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20356771996 and 20356772014.

It is not an unprimeable number, because it can be changed into a prime (20356772057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132186755 + ... + 132186908.

It is an arithmetic number, because the mean of its divisors is an integer number (3172483968).

Almost surely, 2^20356772051 is an apocalyptic number.

20356772051 is a deficient number, since it is larger than the sum of its proper divisors (5023099693).

20356772051 is a wasteful number, since it uses less digits than its factorization.

20356772051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264373681.

The product of its (nonzero) digits is 88200, while the sum is 38.

The spelling of 20356772051 in words is "twenty billion, three hundred fifty-six million, seven hundred seventy-two thousand, fifty-one".