161462801280 has 512 divisors, whose sum is σ = 599326801920. Its totient is φ = 36539596800.

The previous prime is 161462801261. The next prime is 161462801327. The reversal of 161462801280 is 82108264161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45596310 + ... + 45599850.

It is an arithmetic number, because the mean of its divisors is an integer number (1170560160).

Almost surely, 2^161462801280 is an apocalyptic number.

161462801280 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 161462801280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299663400960).

161462801280 is an abundant number, since it is smaller than the sum of its proper divisors (437864000640).

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

161462801280 is a wasteful number, since it uses less digits than its factorization.

161462801280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3718 (or 3706 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The spelling of 161462801280 in words is "one hundred sixty-one billion, four hundred sixty-two million, eight hundred one thousand, two hundred eighty".