126604691628 has 48 divisors (see below), whose sum is σ = 307577084640. Its totient is φ = 40497292800.

The previous prime is 126604691611. The next prime is 126604691639. The reversal of 126604691628 is 826196406621.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

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 15 ways as a sum of consecutive naturals, for example, 2079223 + ... + 2139246.

It is an arithmetic number, because the mean of its divisors is an integer number (6407855930).

Almost surely, 2^126604691628 is an apocalyptic number.

It is an amenable number.

126604691628 is an abundant number, since it is smaller than the sum of its proper divisors (180972393012).

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

126604691628 is a wasteful number, since it uses less digits than its factorization.

126604691628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4218578 (or 4218576 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 126604691628 in words is "one hundred twenty-six billion, six hundred four million, six hundred ninety-one thousand, six hundred twenty-eight".