166616404525233 has 32 divisors (see below), whose sum is σ = 265827605662080. Its totient is φ = 102532838990400.

The previous prime is 166616404525183. The next prime is 166616404525253. The reversal of 166616404525233 is 332525404616661.

It is not a de Polignac number, because 166616404525233 - 2³⁰ = 166615330783409 is a prime.

It is a super-2 number, since 2×166616404525233² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166616404525233.

It is not an unprimeable number, because it can be changed into a prime (166616404525253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148645783 + ... + 149762483.

It is an arithmetic number, because the mean of its divisors is an integer number (8307112676940).

Almost surely, 2^{166616404525233} is an apocalyptic number.

166616404525233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

166616404525233 is a deficient number, since it is larger than the sum of its proper divisors (99211201136847).

166616404525233 is a wasteful number, since it uses less digits than its factorization.

166616404525233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541806 (or 1541800 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 54.

The spelling of 166616404525233 in words is "one hundred sixty-six trillion, six hundred sixteen billion, four hundred four million, five hundred twenty-five thousand, two hundred thirty-three".