161346697508 has 24 divisors (see below), whose sum is σ = 287060376960. Its totient is φ = 79330137120.

The previous prime is 161346697507. The next prime is 161346697511. The reversal of 161346697508 is 805796643161.

It is not an unprimeable number, because it can be changed into a prime (161346697507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 872933 + ... + 1041491.

It is an arithmetic number, because the mean of its divisors is an integer number (11960849040).

Almost surely, 2^161346697508 is an apocalyptic number.

It is an amenable number.

161346697508 is a deficient number, since it is larger than the sum of its proper divisors (125713679452).

161346697508 is a wasteful number, since it uses less digits than its factorization.

161346697508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172547 (or 172545 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 161346697508 in words is "one hundred sixty-one billion, three hundred forty-six million, six hundred ninety-seven thousand, five hundred eight".