161347078880 has 768 divisors, whose sum is σ = 483809034240. Its totient is φ = 50164531200.

The previous prime is 161347078843. The next prime is 161347078939. The reversal of 161347078880 is 88870743161.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1270449377 + ... + 1270449503.

It is an arithmetic number, because the mean of its divisors is an integer number (629959680).

Almost surely, 2^161347078880 is an apocalyptic number.

161347078880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161347078880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241904517120).

161347078880 is an abundant number, since it is smaller than the sum of its proper divisors (322461955360).

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

161347078880 is a wasteful number, since it uses less digits than its factorization.

161347078880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 53.

The spelling of 161347078880 in words is "one hundred sixty-one billion, three hundred forty-seven million, seventy-eight thousand, eight hundred eighty".