166726376490 has 16 divisors (see below), whose sum is σ = 400143303648. Its totient is φ = 44460367056.

The previous prime is 166726376483. The next prime is 166726376501. The reversal of 166726376490 is 94673627661.

It is a self number, because there is not a number n which added to its sum of digits gives 166726376490.

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, 2778772912 + ... + 2778772971.

It is an arithmetic number, because the mean of its divisors is an integer number (25008956478).

Almost surely, 2^166726376490 is an apocalyptic number.

166726376490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166726376490 is an abundant number, since it is smaller than the sum of its proper divisors (233416927158).

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

166726376490 is a wasteful number, since it uses less digits than its factorization.

166726376490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557545893.

The product of its (nonzero) digits is 13716864, while the sum is 57.

The spelling of 166726376490 in words is "one hundred sixty-six billion, seven hundred twenty-six million, three hundred seventy-six thousand, four hundred ninety".