161150908669 has 4 divisors (see below), whose sum is σ = 161245205820. Its totient is φ = 161056611520.

The previous prime is 161150908637. The next prime is 161150908703. The reversal of 161150908669 is 966809051161.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35010152100 + 126140756569 = 187110^2 + 355163^2 .

It is a cyclic number.

It is not a de Polignac number, because 161150908669 - 2⁵ = 161150908637 is a prime.

It is a super-2 number, since 2×161150908669² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161150908769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47146012 + ... + 47149429.

It is an arithmetic number, because the mean of its divisors is an integer number (40311301455).

Almost surely, 2^161150908669 is an apocalyptic number.

It is an amenable number.

161150908669 is a deficient number, since it is larger than the sum of its proper divisors (94297151).

161150908669 is an equidigital number, since it uses as much as digits as its factorization.

161150908669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94297150.

The product of its (nonzero) digits is 699840, while the sum is 52.

The spelling of 161150908669 in words is "one hundred sixty-one billion, one hundred fifty million, nine hundred eight thousand, six hundred sixty-nine".