166916751099 has 32 divisors (see below), whose sum is σ = 254934844416. Its totient is φ = 95161651200.

The previous prime is 166916751083. The next prime is 166916751103. The reversal of 166916751099 is 990157619661.

It is not a de Polignac number, because 166916751099 - 2⁴ = 166916751083 is a prime.

It is a super-2 number, since 2×166916751099² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166916751049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26336859 + ... + 26343195.

It is an arithmetic number, because the mean of its divisors is an integer number (7966713888).

Almost surely, 2^166916751099 is an apocalyptic number.

166916751099 is a deficient number, since it is larger than the sum of its proper divisors (88018093317).

166916751099 is a wasteful number, since it uses less digits than its factorization.

166916751099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9035.

The product of its (nonzero) digits is 5511240, while the sum is 60.

The spelling of 166916751099 in words is "one hundred sixty-six billion, nine hundred sixteen million, seven hundred fifty-one thousand, ninety-nine".