126604691626 has 16 divisors (see below), whose sum is σ = 217042804800. Its totient is φ = 54257605920.

The previous prime is 126604691611. The next prime is 126604691639. The reversal of 126604691626 is 626196406621.

It is a self number, because there is not a number n which added to its sum of digits gives 126604691626.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477841 + ... + 693931.

It is an arithmetic number, because the mean of its divisors is an integer number (13565175300).

Almost surely, 2^126604691626 is an apocalyptic number.

126604691626 is a deficient number, since it is larger than the sum of its proper divisors (90438113174).

126604691626 is a wasteful number, since it uses less digits than its factorization.

126604691626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257949.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 126604691626 in words is "one hundred twenty-six billion, six hundred four million, six hundred ninety-one thousand, six hundred twenty-six".