161263133674136 has 128 divisors (see below), whose sum is σ = 331903256832000. Its totient is φ = 73000629585408.

The previous prime is 161263133674067. The next prime is 161263133674193. The reversal of 161263133674136 is 631476331362161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5028613910 + ... + 5028645978.

It is an arithmetic number, because the mean of its divisors is an integer number (2592994194000).

Almost surely, 2^{161263133674136} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161263133674136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165951628416000).

161263133674136 is an abundant number, since it is smaller than the sum of its proper divisors (170640123157864).

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

161263133674136 is a wasteful number, since it uses less digits than its factorization.

161263133674136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33993 (or 33989 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 53.

The spelling of 161263133674136 in words is "one hundred sixty-one trillion, two hundred sixty-three billion, one hundred thirty-three million, six hundred seventy-four thousand, one hundred thirty-six".