161662084472626 has 4 divisors (see below), whose sum is σ = 242493126708942. Its totient is φ = 80831042236312.

The previous prime is 161662084472611. The next prime is 161662084472639. The reversal of 161662084472626 is 626274480266161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 136852211608225 + 24809872864401 = 11698385^2 + 4980951^2 .

It is a super-2 number, since 2×161662084472626² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40415521118155 + ... + 40415521118158.

Almost surely, 2^{161662084472626} is an apocalyptic number.

161662084472626 is a deficient number, since it is larger than the sum of its proper divisors (80831042236316).

161662084472626 is an equidigital number, since it uses as much as digits as its factorization.

161662084472626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80831042236315.

The product of its (nonzero) digits is 55738368, while the sum is 61.

The spelling of 161662084472626 in words is "one hundred sixty-one trillion, six hundred sixty-two billion, eighty-four million, four hundred seventy-two thousand, six hundred twenty-six".