126512771394 has 48 divisors (see below), whose sum is σ = 267412888512. Its totient is φ = 39826534176.

The previous prime is 126512771383. The next prime is 126512771431. The reversal of 126512771394 is 493177215621.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 787812 + ... + 934704.

It is an arithmetic number, because the mean of its divisors is an integer number (5571101844).

Almost surely, 2^126512771394 is an apocalyptic number.

126512771394 is an abundant number, since it is smaller than the sum of its proper divisors (140900117118).

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

126512771394 is a wasteful number, since it uses less digits than its factorization.

126512771394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147079 (or 147000 counting only the distinct ones).

The product of its digits is 635040, while the sum is 48.

The spelling of 126512771394 in words is "one hundred twenty-six billion, five hundred twelve million, seven hundred seventy-one thousand, three hundred ninety-four".