161136063636 has 48 divisors (see below), whose sum is σ = 376553923200. Its totient is φ = 53630697472.

The previous prime is 161136063629. The next prime is 161136063659. The reversal of 161136063636 is 636360631161.

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, 26356516 + ... + 26362628.

It is an arithmetic number, because the mean of its divisors is an integer number (7844873400).

Almost surely, 2^161136063636 is an apocalyptic number.

It is an amenable number.

161136063636 is an abundant number, since it is smaller than the sum of its proper divisors (215417859564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161136063636 is a wasteful number, since it uses less digits than its factorization.

161136063636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9088 (or 9086 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 42.

Adding to 161136063636 its reverse (636360631161), we get a palindrome (797496694797).

The spelling of 161136063636 in words is "one hundred sixty-one billion, one hundred thirty-six million, sixty-three thousand, six hundred thirty-six".