68126581252 has 72 divisors (see below), whose sum is σ = 128594171160. Its totient is φ = 31470566400.

The previous prime is 68126581249. The next prime is 68126581283. The reversal of 68126581252 is 25218562186.

It can be written as a sum of positive squares in 4 ways, for example, as 48441368836 + 19685212416 = 220094^2 + 140304^2 .

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, 97184502 + ... + 97185202.

It is an arithmetic number, because the mean of its divisors is an integer number (1786030155).

Almost surely, 2^68126581252 is an apocalyptic number.

It is an amenable number.

68126581252 is a deficient number, since it is larger than the sum of its proper divisors (60467589908).

68126581252 is a wasteful number, since it uses less digits than its factorization.

68126581252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109 (or 1028 counting only the distinct ones).

The product of its digits is 460800, while the sum is 46.

The spelling of 68126581252 in words is "sixty-eight billion, one hundred twenty-six million, five hundred eighty-one thousand, two hundred fifty-two".