161274806352 has 200 divisors, whose sum is σ = 513103311072. Its totient is φ = 48497529600.

The previous prime is 161274806333. The next prime is 161274806443. The reversal of 161274806352 is 253608472161.

161274806352 is a `hidden beast` number, since 1 + 6 + 1 + 2 + 7 + 4 + 8 + 0 + 635 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 161274806298 and 161274806307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1824358 + ... + 1910714.

Almost surely, 2^161274806352 is an apocalyptic number.

161274806352 is a gapful number since it is divisible by the number (12) 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 161274806352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256551655536).

161274806352 is an abundant number, since it is smaller than the sum of its proper divisors (351828504720).

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

161274806352 is a wasteful number, since it uses less digits than its factorization.

161274806352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86519 (or 86504 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 161274806352 in words is "one hundred sixty-one billion, two hundred seventy-four million, eight hundred six thousand, three hundred fifty-two".