1257086690764 has 12 divisors (see below), whose sum is σ = 2200263042600. Its totient is φ = 628440107168.

The previous prime is 1257086690693. The next prime is 1257086690773. The reversal of 1257086690764 is 4670966807521.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25782154 + ... + 25830865.

It is an arithmetic number, because the mean of its divisors is an integer number (183355253550).

Almost surely, 2^{1257086690764} is an apocalyptic number.

It is an amenable number.

1257086690764 is a deficient number, since it is larger than the sum of its proper divisors (943176351836).

1257086690764 is a wasteful number, since it uses less digits than its factorization.

1257086690764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51619112 (or 51619110 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 1257086690764 in words is "one trillion, two hundred fifty-seven billion, eighty-six million, six hundred ninety thousand, seven hundred sixty-four".