161534953344 has 32 divisors (see below), whose sum is σ = 429077220840. Its totient is φ = 53844984320.

The previous prime is 161534953337. The next prime is 161534953399. The reversal of 161534953344 is 443359435161.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 161534953293 and 161534953302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210331587 + ... + 210332354.

Almost surely, 2^161534953344 is an apocalyptic number.

It is an amenable number.

161534953344 is an abundant number, since it is smaller than the sum of its proper divisors (267542267496).

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

161534953344 is an equidigital number, since it uses as much as digits as its factorization.

161534953344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420663958 (or 420663946 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 48.

The spelling of 161534953344 in words is "one hundred sixty-one billion, five hundred thirty-four million, nine hundred fifty-three thousand, three hundred forty-four".