166903513438835 has 16 divisors (see below), whose sum is σ = 207598501587456. Its totient is φ = 128731423754208.

The previous prime is 166903513438819. The next prime is 166903513438859. The reversal of 166903513438835 is 538834315309661.

It is a cyclic number.

It is not a de Polignac number, because 166903513438835 - 2⁴ = 166903513438819 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5300191097 + ... + 5300222586.

It is an arithmetic number, because the mean of its divisors is an integer number (12974906349216).

Almost surely, 2^{166903513438835} is an apocalyptic number.

166903513438835 is a deficient number, since it is larger than the sum of its proper divisors (40694988148621).

166903513438835 is a wasteful number, since it uses less digits than its factorization.

166903513438835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600413802.

The product of its (nonzero) digits is 167961600, while the sum is 65.

The spelling of 166903513438835 in words is "one hundred sixty-six trillion, nine hundred three billion, five hundred thirteen million, four hundred thirty-eight thousand, eight hundred thirty-five".