161399928476160 has 960 divisors, whose sum is σ = 638418924823680. Its totient is φ = 37322741514240.

The previous prime is 161399928476093. The next prime is 161399928476179. The reversal of 161399928476160 is 61674829993161.

It is a happy number.

161399928476160 is a `hidden beast` number, since 1 + 6 + 1 + 3 + 9 + 9 + 92 + 8 + 476 + 1 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 609897792 + ... + 610162368.

It is an arithmetic number, because the mean of its divisors is an integer number (665019713358).

Almost surely, 2^{161399928476160} is an apocalyptic number.

161399928476160 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 161399928476160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319209462411840).

161399928476160 is an abundant number, since it is smaller than the sum of its proper divisors (477018996347520).

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

161399928476160 is a wasteful number, since it uses less digits than its factorization.

161399928476160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264729 (or 264710 counting only the distinct ones).

The product of its (nonzero) digits is 211631616, while the sum is 72.

The spelling of 161399928476160 in words is "one hundred sixty-one trillion, three hundred ninety-nine billion, nine hundred twenty-eight million, four hundred seventy-six thousand, one hundred sixty".