161156860600 has 48 divisors (see below), whose sum is σ = 374737533120. Its totient is φ = 64454515200.

The previous prime is 161156860573. The next prime is 161156860607. The reversal of 161156860600 is 6068651161.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161156860607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1661440 + ... + 1755760.

It is an arithmetic number, because the mean of its divisors is an integer number (7807031940).

Almost surely, 2^161156860600 is an apocalyptic number.

161156860600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161156860600 is an abundant number, since it is smaller than the sum of its proper divisors (213580672520).

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

161156860600 is a wasteful number, since it uses less digits than its factorization.

161156860600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102880 (or 102871 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 161156860600 in words is "one hundred sixty-one billion, one hundred fifty-six million, eight hundred sixty thousand, six hundred".