161670682429 has 2 divisors, whose sum is σ = 161670682430. Its totient is φ = 161670682428.

The previous prime is 161670682427. The next prime is 161670682469. The reversal of 161670682429 is 924286076161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117022147225 + 44648535204 = 342085^2 + 211302^2 .

It is a cyclic number.

It is not a de Polignac number, because 161670682429 - 2¹ = 161670682427 is a prime.

It is a super-2 number, since 2×161670682429² (a number of 23 digits) contains 22 as substring.

Together with 161670682427, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161670682423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80835341214 + 80835341215.

It is an arithmetic number, because the mean of its divisors is an integer number (80835341215).

Almost surely, 2^161670682429 is an apocalyptic number.

It is an amenable number.

161670682429 is a deficient number, since it is larger than the sum of its proper divisors (1).

161670682429 is an equidigital number, since it uses as much as digits as its factorization.

161670682429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 161670682429 in words is "one hundred sixty-one billion, six hundred seventy million, six hundred eighty-two thousand, four hundred twenty-nine".