10206620445256 has 8 divisors (see below), whose sum is σ = 19137413334870. Its totient is φ = 5103310222624.

The previous prime is 10206620445247. The next prime is 10206620445283. The reversal of 10206620445256 is 65254402660201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8271088402500 + 1935532042756 = 2875950^2 + 1391234^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637913777821 + ... + 637913777836.

Almost surely, 2^{10206620445256} is an apocalyptic number.

It is an amenable number.

10206620445256 is a deficient number, since it is larger than the sum of its proper divisors (8930792889614).

10206620445256 is a wasteful number, since it uses less digits than its factorization.

10206620445256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275827555663 (or 1275827555659 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 10206620445256 in words is "ten trillion, two hundred six billion, six hundred twenty million, four hundred forty-five thousand, two hundred fifty-six".