126559921166 has 64 divisors (see below), whose sum is σ = 225833164800. Its totient is φ = 53157293280.

The previous prime is 126559921129. The next prime is 126559921181. The reversal of 126559921166 is 661129955621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11837075 + ... + 11847761.

It is an arithmetic number, because the mean of its divisors is an integer number (3528643200).

Almost surely, 2^126559921166 is an apocalyptic number.

126559921166 is a deficient number, since it is larger than the sum of its proper divisors (99273243634).

126559921166 is a wasteful number, since it uses less digits than its factorization.

126559921166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11054 (or 11040 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 53.

The spelling of 126559921166 in words is "one hundred twenty-six billion, five hundred fifty-nine million, nine hundred twenty-one thousand, one hundred sixty-six".