166668516850 has 48 divisors (see below), whose sum is σ = 340455441600. Its totient is φ = 60199947200.

The previous prime is 166668516823. The next prime is 166668516863. The reversal of 166668516850 is 58615866661.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 934942 + ... + 1098841.

It is an arithmetic number, because the mean of its divisors is an integer number (7092821700).

Almost surely, 2^166668516850 is an apocalyptic number.

166668516850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166668516850 is an abundant number, since it is smaller than the sum of its proper divisors (173786924750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166668516850 is a wasteful number, since it uses less digits than its factorization.

166668516850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033955 (or 2033950 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 58.

The spelling of 166668516850 in words is "one hundred sixty-six billion, six hundred sixty-eight million, five hundred sixteen thousand, eight hundred fifty".