10251320136642 has 24 divisors (see below), whose sum is σ = 23919746986044. Its totient is φ = 3154252349664.

The previous prime is 10251320136613. The next prime is 10251320136667. The reversal of 10251320136642 is 24663102315201.

10251320136642 is a `hidden beast` number, since 1 + 0 + 2 + 5 + 1 + 3 + 2 + 0 + 1 + 3 + 6 + 642 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7991923346001 + 2259396790641 = 2826999^2 + 1503129^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10251320136597 and 10251320136606.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21904529973 + ... + 21904530440.

Almost surely, 2^{10251320136642} is an apocalyptic number.

10251320136642 is an abundant number, since it is smaller than the sum of its proper divisors (13668426849402).

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

10251320136642 is a wasteful number, since it uses less digits than its factorization.

10251320136642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43809060434 (or 43809060431 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 10251320136642 in words is "ten trillion, two hundred fifty-one billion, three hundred twenty million, one hundred thirty-six thousand, six hundred forty-two".