166550263145615 has 32 divisors (see below), whose sum is σ = 208649173931520. Its totient is φ = 127500275750400.

The previous prime is 166550263145587. The next prime is 166550263145641. The reversal of 166550263145615 is 516541362055661.

It is not a de Polignac number, because 166550263145615 - 2³⁰ = 166549189403791 is a prime.

It is a super-2 number, since 2×166550263145615² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105532706 + ... + 107099264.

It is an arithmetic number, because the mean of its divisors is an integer number (6520286685360).

Almost surely, 2^{166550263145615} is an apocalyptic number.

166550263145615 is a deficient number, since it is larger than the sum of its proper divisors (42098910785905).

166550263145615 is a wasteful number, since it uses less digits than its factorization.

166550263145615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576083.

The product of its (nonzero) digits is 19440000, while the sum is 56.

The spelling of 166550263145615 in words is "one hundred sixty-six trillion, five hundred fifty billion, two hundred sixty-three million, one hundred forty-five thousand, six hundred fifteen".