126170221860 has 144 divisors (see below), whose sum is σ = 414147517056. Its totient is φ = 32182520832.

The previous prime is 126170221847. The next prime is 126170221871. The reversal of 126170221860 is 68122071621.

126170221860 is a `hidden beast` number, since 1 + 2 + 617 + 0 + 22 + 18 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 452589 + ... + 676148.

It is an arithmetic number, because the mean of its divisors is an integer number (2876024424).

Almost surely, 2^126170221860 is an apocalyptic number.

126170221860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126170221860 is an abundant number, since it is smaller than the sum of its proper divisors (287977295196).

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

126170221860 is a wasteful number, since it uses less digits than its factorization.

126170221860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128784 (or 1128770 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 126170221860 in words is "one hundred twenty-six billion, one hundred seventy million, two hundred twenty-one thousand, eight hundred sixty".