161600515154 has 32 divisors (see below), whose sum is σ = 262723668480. Its totient is φ = 74547357456.

The previous prime is 161600515117. The next prime is 161600515183. The reversal of 161600515154 is 451515006161.

It is a happy number.

It is a super-2 number, since 2×161600515154² (a number of 23 digits) contains 22 as substring.

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, 9953087 + ... + 9969309.

It is an arithmetic number, because the mean of its divisors is an integer number (8210114640).

Almost surely, 2^161600515154 is an apocalyptic number.

161600515154 is a deficient number, since it is larger than the sum of its proper divisors (101123153326).

161600515154 is a wasteful number, since it uses less digits than its factorization.

161600515154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18531 (or 18505 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 35.

The spelling of 161600515154 in words is "one hundred sixty-one billion, six hundred million, five hundred fifteen thousand, one hundred fifty-four".