166652512515 has 12 divisors (see below), whose sum is σ = 288864355104. Its totient is φ = 88881339984.

The previous prime is 166652512513. The next prime is 166652512547. The reversal of 166652512515 is 515215256661.

It is a happy number.

It is not a de Polignac number, because 166652512515 - 2¹ = 166652512513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 3703389167 = 166652512515 / (1 + 6 + 6 + 6 + 5 + 2 + 5 + 1 + 2 + 5 + 1 + 5).

It is not an unprimeable number, because it can be changed into a prime (166652512513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1851694539 + ... + 1851694628.

It is an arithmetic number, because the mean of its divisors is an integer number (24072029592).

Almost surely, 2^166652512515 is an apocalyptic number.

166652512515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166652512515 is a deficient number, since it is larger than the sum of its proper divisors (122211842589).

166652512515 is a wasteful number, since it uses less digits than its factorization.

166652512515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703389178 (or 3703389175 counting only the distinct ones).

The product of its digits is 540000, while the sum is 45.

The spelling of 166652512515 in words is "one hundred sixty-six billion, six hundred fifty-two million, five hundred twelve thousand, five hundred fifteen".