20256262436 has 12 divisors (see below), whose sum is σ = 36029581980. Its totient is φ = 9962096160.

The previous prime is 20256262427. The next prime is 20256262469. The reversal of 20256262436 is 63426265202.

It can be written as a sum of positive squares in 2 ways, for example, as 7375374400 + 12880888036 = 85880^2 + 113494^2 .

It is a super-2 number, since 2×20256262436² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20256262436.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41508491 + ... + 41508978.

It is an arithmetic number, because the mean of its divisors is an integer number (3002465165).

Almost surely, 2^20256262436 is an apocalyptic number.

It is an amenable number.

20256262436 is a deficient number, since it is larger than the sum of its proper divisors (15773319544).

20256262436 is a wasteful number, since it uses less digits than its factorization.

20256262436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83017534 (or 83017532 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 20256262436 in words is "twenty billion, two hundred fifty-six million, two hundred sixty-two thousand, four hundred thirty-six".