1256117477134 has 32 divisors (see below), whose sum is σ = 2042811640800. Its totient is φ = 575835391872.

The previous prime is 1256117477123. The next prime is 1256117477141. The reversal of 1256117477134 is 4317747116521.

It is a super-2 number, since 2×1256117477134² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10960312 + ... + 11074324.

It is an arithmetic number, because the mean of its divisors is an integer number (63837863775).

Almost surely, 2^{1256117477134} is an apocalyptic number.

1256117477134 is a deficient number, since it is larger than the sum of its proper divisors (786694163666).

1256117477134 is a wasteful number, since it uses less digits than its factorization.

1256117477134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116884.

The product of its digits is 987840, while the sum is 49.

The spelling of 1256117477134 in words is "one trillion, two hundred fifty-six billion, one hundred seventeen million, four hundred seventy-seven thousand, one hundred thirty-four".