126170221858 has 32 divisors (see below), whose sum is σ = 194975605440. Its totient is φ = 61199772480.

The previous prime is 126170221847. The next prime is 126170221871. The reversal of 126170221858 is 858122071621.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7649116 + ... + 7665592.

It is an arithmetic number, because the mean of its divisors is an integer number (6092987670).

Almost surely, 2^126170221858 is an apocalyptic number.

126170221858 is a deficient number, since it is larger than the sum of its proper divisors (68805383582).

126170221858 is a wasteful number, since it uses less digits than its factorization.

126170221858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17122.

The product of its (nonzero) digits is 107520, while the sum is 43.

The spelling of 126170221858 in words is "one hundred twenty-six billion, one hundred seventy million, two hundred twenty-one thousand, eight hundred fifty-eight".