166831412264866 has 16 divisors (see below), whose sum is σ = 252553661870400. Its totient is φ = 82646923146768.

The previous prime is 166831412264813. The next prime is 166831412264879. The reversal of 166831412264866 is 668462214138661.

It is a super-2 number, since 2×166831412264866² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166831412264798 and 166831412264807.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11047996 + ... + 21347623.

It is an arithmetic number, because the mean of its divisors is an integer number (15784603866900).

Almost surely, 2^{166831412264866} is an apocalyptic number.

166831412264866 is a deficient number, since it is larger than the sum of its proper divisors (85722249605534).

166831412264866 is a wasteful number, since it uses less digits than its factorization.

166831412264866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32419353.

The product of its digits is 95551488, while the sum is 64.

The spelling of 166831412264866 in words is "one hundred sixty-six trillion, eight hundred thirty-one billion, four hundred twelve million, two hundred sixty-four thousand, eight hundred sixty-six".