161293457060 has 24 divisors (see below), whose sum is σ = 338725154040. Its totient is φ = 64515688704.

The previous prime is 161293457053. The next prime is 161293457081. The reversal of 161293457060 is 60754392161.

It can be written as a sum of positive squares in 4 ways, for example, as 3951128164 + 157342328896 = 62858^2 + 396664^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 914792 + ... + 1076768.

It is an arithmetic number, because the mean of its divisors is an integer number (14113548085).

Almost surely, 2^161293457060 is an apocalyptic number.

161293457060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161293457060 is an abundant number, since it is smaller than the sum of its proper divisors (177431696980).

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

161293457060 is a wasteful number, since it uses less digits than its factorization.

161293457060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211775 (or 211773 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 161293457060 in words is "one hundred sixty-one billion, two hundred ninety-three million, four hundred fifty-seven thousand, sixty".