166015231552515 has 32 divisors (see below), whose sum is σ = 266016913528320. Its totient is φ = 88410695353344.

The previous prime is 166015231552477. The next prime is 166015231552661. The reversal of 166015231552515 is 515255132510661.

It is not a de Polignac number, because 166015231552515 - 2¹⁴ = 166015231536131 is a prime.

It is a super-2 number, since 2×166015231552515² (a number of 29 digits) contains 22 as substring.

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, 28137402 + ... + 33522288.

It is an arithmetic number, because the mean of its divisors is an integer number (8313028547760).

Almost surely, 2^{166015231552515} is an apocalyptic number.

166015231552515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166015231552515 is a deficient number, since it is larger than the sum of its proper divisors (100001681975805).

166015231552515 is a wasteful number, since it uses less digits than its factorization.

166015231552515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5387931.

The product of its (nonzero) digits is 1350000, while the sum is 48.

The spelling of 166015231552515 in words is "one hundred sixty-six trillion, fifteen billion, two hundred thirty-one million, five hundred fifty-two thousand, five hundred fifteen".