166015231552433 has 16 divisors (see below), whose sum is σ = 166830152346000. Its totient is φ = 165201214058496.

The previous prime is 166015231552421. The next prime is 166015231552477. The reversal of 166015231552433 is 334255132510661.

It can be written as a sum of positive squares in 8 ways, for example, as 103485615692944 + 62529615859489 = 10172788^2 + 7907567^2 .

It is a cyclic number.

It is not a de Polignac number, because 166015231552433 - 2⁶ = 166015231552369 is a prime.

It is a super-2 number, since 2×166015231552433² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166015231552033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3177359693 + ... + 3177411941.

It is an arithmetic number, because the mean of its divisors is an integer number (10426884521625).

Almost surely, 2^{166015231552433} is an apocalyptic number.

It is an amenable number.

166015231552433 is a deficient number, since it is larger than the sum of its proper divisors (814920793567).

166015231552433 is a wasteful number, since it uses less digits than its factorization.

166015231552433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60596.

The product of its (nonzero) digits is 1944000, while the sum is 47.

The spelling of 166015231552433 in words is "one hundred sixty-six trillion, fifteen billion, two hundred thirty-one million, five hundred fifty-two thousand, four hundred thirty-three".