161091366696 has 192 divisors, whose sum is σ = 500843616000. Its totient is φ = 46363000320.

The previous prime is 161091366691. The next prime is 161091366701. The reversal of 161091366696 is 696663190161.

It is an interprime number because it is at equal distance from previous prime (161091366691) and next prime (161091366701).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (161091366691) 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 47 ways as a sum of consecutive naturals, for example, 1347606 + ... + 1462266.

It is an arithmetic number, because the mean of its divisors is an integer number (2608560500).

Almost surely, 2^161091366696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161091366696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250421808000).

161091366696 is an abundant number, since it is smaller than the sum of its proper divisors (339752249304).

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

161091366696 is a wasteful number, since it uses less digits than its factorization.

161091366696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114784 (or 114777 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The spelling of 161091366696 in words is "one hundred sixty-one billion, ninety-one million, three hundred sixty-six thousand, six hundred ninety-six".