1256412761607 has 48 divisors (see below), whose sum is σ = 1844109008000. Its totient is φ = 758726274240.

The previous prime is 1256412761573. The next prime is 1256412761621. The reversal of 1256412761607 is 7061672146521.

It is not a de Polignac number, because 1256412761607 - 2¹⁰ = 1256412760583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256412761677) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95910144 + ... + 95923242.

Almost surely, 2^{1256412761607} is an apocalyptic number.

1256412761607 is a deficient number, since it is larger than the sum of its proper divisors (587696246393).

1256412761607 is a wasteful number, since it uses less digits than its factorization.

1256412761607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16348 (or 16325 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 1256412761607 in words is "one trillion, two hundred fifty-six billion, four hundred twelve million, seven hundred sixty-one thousand, six hundred seven".