166001650155 has 32 divisors (see below), whose sum is σ = 321942597120. Its totient is φ = 80485647840.

The previous prime is 166001650153. The next prime is 166001650187. The reversal of 166001650155 is 551056100661.

It is not a de Polignac number, because 166001650155 - 2¹ = 166001650153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166001650151) 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, 55891327 + ... + 55894296.

It is an arithmetic number, because the mean of its divisors is an integer number (10060706160).

Almost surely, 2^166001650155 is an apocalyptic number.

166001650155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166001650155 is a deficient number, since it is larger than the sum of its proper divisors (155940946965).

166001650155 is a wasteful number, since it uses less digits than its factorization.

166001650155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111785648 (or 111785642 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

It can be divided in two parts, 1660016 and 50155, that added together give a palindrome (1710171).

The spelling of 166001650155 in words is "one hundred sixty-six billion, one million, six hundred fifty thousand, one hundred fifty-five".