161051101111560 has 128 divisors (see below), whose sum is σ = 527082425717760. Its totient is φ = 39042239712000.

The previous prime is 161051101111553. The next prime is 161051101111567. The reversal of 161051101111560 is 65111101150161.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (161051101111553) and next prime (161051101111567).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (161051101111567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121508179 + ... + 122826461.

It is an arithmetic number, because the mean of its divisors is an integer number (4117831450920).

Almost surely, 2^{161051101111560} is an apocalyptic number.

161051101111560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161051101111560 is an abundant number, since it is smaller than the sum of its proper divisors (366031324606200).

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

161051101111560 is a wasteful number, since it uses less digits than its factorization.

161051101111560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410859 (or 1410855 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 30.

The spelling of 161051101111560 in words is "one hundred sixty-one trillion, fifty-one billion, one hundred one million, one hundred eleven thousand, five hundred sixty".