167379992641 has 3 divisors (see below), whose sum is σ = 167380401763. Its totient is φ = 167379583520.

The previous prime is 167379992621. The next prime is 167379992669. The reversal of 167379992641 is 146299973761.

The square root of 167379992641 is 409121.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 146299973761 = 19 ⋅7699998619.

It can be written as a sum of positive squares in only one way, i.e., 138479992641 + 28900000000 = 372129^2 + 170000^2 .

It is not a de Polignac number, because 167379992641 - 2²³ = 167371604033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (167379992621) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 204561 + ... + 613681.

Almost surely, 2^167379992641 is an apocalyptic number.

167379992641 is the 409121-st square number.

167379992641 is the 204561-st centered octagonal number.

It is an amenable number.

167379992641 is a deficient number, since it is larger than the sum of its proper divisors (409122).

167379992641 is an frugal number, since it uses more digits than its factorization.

167379992641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818242 (or 409121 counting only the distinct ones).

The product of its digits is 30862944, while the sum is 64.

Multiplying 167379992641 by its sum of digits (64), we get a square (10712319529024 = 3272968²).

The spelling of 167379992641 in words is "one hundred sixty-seven billion, three hundred seventy-nine million, nine hundred ninety-two thousand, six hundred forty-one".