161379737304 has 128 divisors (see below), whose sum is σ = 423122918400. Its totient is φ = 51249623040.

The previous prime is 161379737303. The next prime is 161379737329. The reversal of 161379737304 is 403737973161.

It is a super-2 number, since 2×161379737304² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161379737303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6662287 + ... + 6686465.

It is an arithmetic number, because the mean of its divisors is an integer number (3305647800).

Almost surely, 2^161379737304 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 161379737304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211561459200).

161379737304 is an abundant number, since it is smaller than the sum of its proper divisors (261743181096).

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

161379737304 is a wasteful number, since it uses less digits than its factorization.

161379737304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24393 (or 24389 counting only the distinct ones).

The product of its (nonzero) digits is 2000376, while the sum is 51.

The spelling of 161379737304 in words is "one hundred sixty-one billion, three hundred seventy-nine million, seven hundred thirty-seven thousand, three hundred four".