1311258177612 has 36 divisors (see below), whose sum is σ = 3428864777520. Its totient is φ = 422014125792.

The previous prime is 1311258177571. The next prime is 1311258177629. The reversal of 1311258177612 is 2167718521131.

1311258177612 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 2 + 581 + 7 + 7 + 61 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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, 627996168 + ... + 627998255.

It is an arithmetic number, because the mean of its divisors is an integer number (95246243820).

Almost surely, 2^{1311258177612} is an apocalyptic number.

1311258177612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1311258177612 is an abundant number, since it is smaller than the sum of its proper divisors (2117606599908).

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

1311258177612 is a wasteful number, since it uses less digits than its factorization.

1311258177612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255994462 (or 1255994457 counting only the distinct ones).

The product of its digits is 141120, while the sum is 45.

The spelling of 1311258177612 in words is "one trillion, three hundred eleven billion, two hundred fifty-eight million, one hundred seventy-seven thousand, six hundred twelve".