166677755494 has 16 divisors (see below), whose sum is σ = 250625305008. Its totient is φ = 83136092512.

The previous prime is 166677755479. The next prime is 166677755509. The reversal of 166677755494 is 494557776661.

It is an interprime number because it is at equal distance from previous prime (166677755479) and next prime (166677755509).

It is a congruent number.

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, 3410052 + ... + 3458584.

It is an arithmetic number, because the mean of its divisors is an integer number (15664081563).

Almost surely, 2^166677755494 is an apocalyptic number.

166677755494 is a deficient number, since it is larger than the sum of its proper divisors (83947549514).

166677755494 is a wasteful number, since it uses less digits than its factorization.

166677755494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52679.

The product of its digits is 266716800, while the sum is 67.

It can be divided in two parts, 1666777 and 55494, that added together give a palindrome (1722271).

The spelling of 166677755494 in words is "one hundred sixty-six billion, six hundred seventy-seven million, seven hundred fifty-five thousand, four hundred ninety-four".