161339044740 has 48 divisors (see below), whose sum is σ = 451788865920. Its totient is φ = 43019979520.

The previous prime is 161339044693. The next prime is 161339044781. The reversal of 161339044740 is 47440933161.

It is a junction number, because it is equal to n+sod(n) for n = 161339044692 and 161339044701.

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, 610801 + ... + 834119.

It is an arithmetic number, because the mean of its divisors is an integer number (9412268040).

Almost surely, 2^161339044740 is an apocalyptic number.

161339044740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161339044740 is an abundant number, since it is smaller than the sum of its proper divisors (290449821180).

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

161339044740 is a wasteful number, since it uses less digits than its factorization.

161339044740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235372 (or 235370 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 161339044740 in words is "one hundred sixty-one billion, three hundred thirty-nine million, forty-four thousand, seven hundred forty".