166422678492 has 48 divisors (see below), whose sum is σ = 448187830272. Its totient is φ = 47078548800.

The previous prime is 166422678449. The next prime is 166422678509. The reversal of 166422678492 is 294876224661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9799548 + ... + 9816515.

It is an arithmetic number, because the mean of its divisors is an integer number (9337246464).

Almost surely, 2^166422678492 is an apocalyptic number.

166422678492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166422678492 is an abundant number, since it is smaller than the sum of its proper divisors (281765151780).

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

166422678492 is a wasteful number, since it uses less digits than its factorization.

166422678492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19616178 (or 19616176 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 57.

The spelling of 166422678492 in words is "one hundred sixty-six billion, four hundred twenty-two million, six hundred seventy-eight thousand, four hundred ninety-two".