191365162956 has 240 divisors, whose sum is σ = 557626718880. Its totient is φ = 56733281280.

The previous prime is 191365162889. The next prime is 191365162957. The reversal of 191365162956 is 659261563191.

191365162956 is a `hidden beast` number, since 1 + 9 + 1 + 3 + 6 + 5 + 1 + 629 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (191365162957) 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 79 ways as a sum of consecutive naturals, for example, 77255590 + ... + 77258066.

It is an arithmetic number, because the mean of its divisors is an integer number (2323444662).

Almost surely, 2^191365162956 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 191365162956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278813359440).

191365162956 is an abundant number, since it is smaller than the sum of its proper divisors (366261555924).

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

191365162956 is a wasteful number, since it uses less digits than its factorization.

191365162956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2966 (or 2955 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 54.

The spelling of 191365162956 in words is "one hundred ninety-one billion, three hundred sixty-five million, one hundred sixty-two thousand, nine hundred fifty-six".