166890157776 has 60 divisors (see below), whose sum is σ = 468711155328. Its totient is φ = 55433466432.

The previous prime is 166890157769. The next prime is 166890157793. The reversal of 166890157776 is 677751098661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2006880 + ... + 2088383.

Almost surely, 2^166890157776 is an apocalyptic number.

166890157776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166890157776 is an abundant number, since it is smaller than the sum of its proper divisors (301820997552).

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

166890157776 is a wasteful number, since it uses less digits than its factorization.

166890157776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095560 (or 4095551 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 63.

The spelling of 166890157776 in words is "one hundred sixty-six billion, eight hundred ninety million, one hundred fifty-seven thousand, seven hundred seventy-six".