161471025489408 has 640 divisors, whose sum is σ = 471107679178752. Its totient is φ = 48939433721856.

The previous prime is 161471025489341. The next prime is 161471025489427. The reversal of 161471025489408 is 804984520174161.

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, 112680407860 + ... + 112680409292.

Almost surely, 2^{161471025489408} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161471025489408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235553839589376).

161471025489408 is an abundant number, since it is smaller than the sum of its proper divisors (309636653689344).

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

161471025489408 is a wasteful number, since it uses less digits than its factorization.

161471025489408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254 (or 2238 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 60.

The spelling of 161471025489408 in words is "one hundred sixty-one trillion, four hundred seventy-one billion, twenty-five million, four hundred eighty-nine thousand, four hundred eight".