161598594480 has 80 divisors (see below), whose sum is σ = 501061144320. Its totient is φ = 43083883264.

The previous prime is 161598594457. The next prime is 161598594503. The reversal of 161598594480 is 84495895161.

It is an interprime number because it is at equal distance from previous prime (161598594457) and next prime (161598594503).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×161598594480² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1112119 + ... + 1249001.

It is an arithmetic number, because the mean of its divisors is an integer number (6263264304).

Almost surely, 2^161598594480 is an apocalyptic number.

161598594480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161598594480 is an abundant number, since it is smaller than the sum of its proper divisors (339462549840).

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

161598594480 is a wasteful number, since it uses less digits than its factorization.

161598594480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141818 (or 141812 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 60.

The spelling of 161598594480 in words is "one hundred sixty-one billion, five hundred ninety-eight million, five hundred ninety-four thousand, four hundred eighty".