161598559270 has 32 divisors (see below), whose sum is σ = 307111898880. Its totient is φ = 61052317920.

The previous prime is 161598559231. The next prime is 161598559301. The reversal of 161598559270 is 72955895161.

It is a happy number.

It is a super-2 number, since 2×161598559270² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1221882 + ... + 1347661.

It is an arithmetic number, because the mean of its divisors is an integer number (9597246840).

Almost surely, 2^161598559270 is an apocalyptic number.

161598559270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161598559270 is a deficient number, since it is larger than the sum of its proper divisors (145513339610).

161598559270 is a wasteful number, since it uses less digits than its factorization.

161598559270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569900.

The product of its (nonzero) digits is 6804000, while the sum is 58.

The spelling of 161598559270 in words is "one hundred sixty-one billion, five hundred ninety-eight million, five hundred fifty-nine thousand, two hundred seventy".