126251388764 has 12 divisors (see below), whose sum is σ = 228067025088. Its totient is φ = 61089381600.

The previous prime is 126251388713. The next prime is 126251388779. The reversal of 126251388764 is 467883152621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509078057 + ... + 509078304.

It is an arithmetic number, because the mean of its divisors is an integer number (19005585424).

Almost surely, 2^126251388764 is an apocalyptic number.

It is an amenable number.

126251388764 is a deficient number, since it is larger than the sum of its proper divisors (101815636324).

126251388764 is a wasteful number, since it uses less digits than its factorization.

126251388764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018156396 (or 1018156394 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 53.

The spelling of 126251388764 in words is "one hundred twenty-six billion, two hundred fifty-one million, three hundred eighty-eight thousand, seven hundred sixty-four".