166154001072 has 40 divisors (see below), whose sum is σ = 429358918080. Its totient is φ = 55368183360.

The previous prime is 166154001059. The next prime is 166154001157. The reversal of 166154001072 is 270100451661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351622 + ... + 675237.

It is an arithmetic number, because the mean of its divisors is an integer number (10733972952).

Almost surely, 2^166154001072 is an apocalyptic number.

166154001072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166154001072 is an abundant number, since it is smaller than the sum of its proper divisors (263204917008).

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

166154001072 is a wasteful number, since it uses less digits than its factorization.

166154001072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030241 (or 1030235 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The spelling of 166154001072 in words is "one hundred sixty-six billion, one hundred fifty-four million, one thousand, seventy-two".