20462664256 has 14 divisors (see below), whose sum is σ = 40605599510. Its totient is φ = 10231332096.

The previous prime is 20462664247. The next prime is 20462664301. The reversal of 20462664256 is 65246626402.

It can be written as a sum of positive squares in only one way, i.e., 19651553856 + 811110400 = 140184^2 + 28480^2 .

It is a super-3 number, since 3×20462664256³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159864501 + ... + 159864628.

It is an arithmetic number, because the mean of its divisors is an integer number (2900399965).

Almost surely, 2^20462664256 is an apocalyptic number.

It is an amenable number.

20462664256 is a deficient number, since it is larger than the sum of its proper divisors (20142935254).

20462664256 is an equidigital number, since it uses as much as digits as its factorization.

20462664256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319729141 (or 319729131 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 20462664256 in words is "twenty billion, four hundred sixty-two million, six hundred sixty-four thousand, two hundred fifty-six".