161706269039616 has 264 divisors, whose sum is σ = 544517028255200. Its totient is φ = 46201790251008.

The previous prime is 161706269039611. The next prime is 161706269039669. The reversal of 161706269039616 is 616930962607161.

161706269039616 is a `hidden beast` number, since 1 + 6 + 1 + 7 + 0 + 6 + 2 + 6 + 9 + 0 + 3 + 9 + 616 = 666.

It is a super-2 number, since 2×161706269039616² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161706269039611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22416541 + ... + 28738716.

Almost surely, 2^{161706269039616} is an apocalyptic number.

161706269039616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161706269039616 is an abundant number, since it is smaller than the sum of its proper divisors (382810759215584).

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

161706269039616 is an equidigital number, since it uses as much as digits as its factorization.

161706269039616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51155304 (or 51155269 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 63.

The spelling of 161706269039616 in words is "one hundred sixty-one trillion, seven hundred six billion, two hundred sixty-nine million, thirty-nine thousand, six hundred sixteen".