161202253632245 has 16 divisors (see below), whose sum is σ = 221079163511808. Its totient is φ = 110537794654080.

The previous prime is 161202253632157. The next prime is 161202253632253. The reversal of 161202253632245 is 542236352202161.

It is not a de Polignac number, because 161202253632245 - 2²² = 161202249437941 is a prime.

It is a super-2 number, since 2×161202253632245² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161202253632196 and 161202253632205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14209349 + ... + 22897818.

It is an arithmetic number, because the mean of its divisors is an integer number (13817447719488).

Almost surely, 2^{161202253632245} is an apocalyptic number.

It is an amenable number.

161202253632245 is a deficient number, since it is larger than the sum of its proper divisors (59876909879563).

161202253632245 is a wasteful number, since it uses less digits than its factorization.

161202253632245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37231300.

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 161202253632245 in words is "one hundred sixty-one trillion, two hundred two billion, two hundred fifty-three million, six hundred thirty-two thousand, two hundred forty-five".