166220151552 has 216 divisors, whose sum is σ = 589851420704. Its totient is φ = 43838226432.

The previous prime is 166220151511. The next prime is 166220151619. The reversal of 166220151552 is 255151022661.

166220151552 is a `hidden beast` number, since 1 + 6 + 622 + 0 + 15 + 15 + 5 + 2 = 666.

166220151552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186733 + ... + 606060.

Almost surely, 2^166220151552 is an apocalyptic number.

166220151552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166220151552 is an abundant number, since it is smaller than the sum of its proper divisors (423631269152).

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

166220151552 is a wasteful number, since it uses less digits than its factorization.

166220151552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792835 (or 792818 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 166220151552 in words is "one hundred sixty-six billion, two hundred twenty million, one hundred fifty-one thousand, five hundred fifty-two".