166377647674 has 16 divisors (see below), whose sum is σ = 285224779008. Its totient is φ = 71303217552.

The previous prime is 166377647671. The next prime is 166377647699. The reversal of 166377647674 is 476746773661.

It is a super-2 number, since 2×166377647674² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166377647671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816319 + ... + 999565.

It is an arithmetic number, because the mean of its divisors is an integer number (17826548688).

Almost surely, 2^166377647674 is an apocalyptic number.

166377647674 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

166377647674 is a deficient number, since it is larger than the sum of its proper divisors (118847131334).

166377647674 is a wasteful number, since it uses less digits than its factorization.

166377647674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248109.

The product of its digits is 149361408, while the sum is 64.

The spelling of 166377647674 in words is "one hundred sixty-six billion, three hundred seventy-seven million, six hundred forty-seven thousand, six hundred seventy-four".