126559921167 has 12 divisors (see below), whose sum is σ = 182815494264. Its totient is φ = 84370179600.

The previous prime is 126559921129. The next prime is 126559921181. The reversal of 126559921167 is 761129955621.

126559921167 is a `hidden beast` number, since 1 + 2 + 6 + 559 + 9 + 21 + 1 + 67 = 666.

It is not a de Polignac number, because 126559921167 - 2²² = 126555726863 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126559921667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15292 + ... + 503342.

It is an arithmetic number, because the mean of its divisors is an integer number (15234624522).

Almost surely, 2^126559921167 is an apocalyptic number.

126559921167 is a deficient number, since it is larger than the sum of its proper divisors (56255573097).

126559921167 is a wasteful number, since it uses less digits than its factorization.

126559921167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516870 (or 516867 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 54.

The spelling of 126559921167 in words is "one hundred twenty-six billion, five hundred fifty-nine million, nine hundred twenty-one thousand, one hundred sixty-seven".