160997729408 has 96 divisors (see below), whose sum is σ = 337695617700. Its totient is φ = 76409487360.

The previous prime is 160997729383. The next prime is 160997729423. The reversal of 160997729408 is 804927799061.

It can be written as a sum of positive squares in 6 ways, for example, as 112418042944 + 48579686464 = 335288^2 + 220408^2 .

It is a super-3 number, since 3×160997729408³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7173308 + ... + 7195716.

Almost surely, 2^160997729408 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 160997729408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168847808850).

160997729408 is an abundant number, since it is smaller than the sum of its proper divisors (176697888292).

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

160997729408 is an equidigital number, since it uses as much as digits as its factorization.

160997729408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22538 (or 22489 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 62.

The spelling of 160997729408 in words is "one hundred sixty billion, nine hundred ninety-seven million, seven hundred twenty-nine thousand, four hundred eight".