161165370386 has 8 divisors (see below), whose sum is σ = 241752956940. Its totient is φ = 80581051408.

The previous prime is 161165370383. The next prime is 161165370397. The reversal of 161165370386 is 683073561161.

It can be written as a sum of positive squares in 2 ways, for example, as 131917872025 + 29247498361 = 363205^2 + 171019^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161165370386² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161165370386.

It is not an unprimeable number, because it can be changed into a prime (161165370383) 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, 689621 + ... + 893256.

Almost surely, 2^161165370386 is an apocalyptic number.

161165370386 is a deficient number, since it is larger than the sum of its proper divisors (80587586554).

161165370386 is a wasteful number, since it uses less digits than its factorization.

161165370386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633788.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 161165370386 in words is "one hundred sixty-one billion, one hundred sixty-five million, three hundred seventy thousand, three hundred eighty-six".