20276725656 has 64 divisors (see below), whose sum is σ = 58553124480. Its totient is φ = 5783022080.

The previous prime is 20276725621. The next prime is 20276725657. The reversal of 20276725656 is 65652767202.

It is a super-2 number, since 2×20276725656² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20276725657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2254506 + ... + 2263481.

It is an arithmetic number, because the mean of its divisors is an integer number (914892570).

Almost surely, 2^20276725656 is an apocalyptic number.

It is an amenable number.

20276725656 is an abundant number, since it is smaller than the sum of its proper divisors (38276398824).

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

20276725656 is a wasteful number, since it uses less digits than its factorization.

20276725656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4518024 (or 4518020 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 48.

The spelling of 20276725656 in words is "twenty billion, two hundred seventy-six million, seven hundred twenty-five thousand, six hundred fifty-six".