166415142652507 has 16 divisors (see below), whose sum is σ = 200199042720000. Its totient is φ = 135133847765280.

The previous prime is 166415142652501. The next prime is 166415142652537. The reversal of 166415142652507 is 705256241514661.

It is not a de Polignac number, because 166415142652507 - 2⁴³ = 157619049630299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166415142652501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108765657 + ... + 110285077.

It is an arithmetic number, because the mean of its divisors is an integer number (12512440170000).

Almost surely, 2^{166415142652507} is an apocalyptic number.

166415142652507 is a deficient number, since it is larger than the sum of its proper divisors (33783900067493).

166415142652507 is a wasteful number, since it uses less digits than its factorization.

166415142652507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342946.

The product of its (nonzero) digits is 12096000, while the sum is 55.

The spelling of 166415142652507 in words is "one hundred sixty-six trillion, four hundred fifteen billion, one hundred forty-two million, six hundred fifty-two thousand, five hundred seven".