72195696967 has 4 divisors (see below), whose sum is σ = 72279744040. Its totient is φ = 72111649896.

The previous prime is 72195696929. The next prime is 72195696983. The reversal of 72195696967 is 76969659127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76969659127 = 6121 ⋅12574687.

It is a cyclic number.

It is not a de Polignac number, because 72195696967 - 2¹⁵ = 72195664199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72195699967) 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 3 ways as a sum of consecutive naturals, for example, 42022248 + ... + 42023965.

It is an arithmetic number, because the mean of its divisors is an integer number (18069936010).

Almost surely, 2^72195696967 is an apocalyptic number.

72195696967 is a deficient number, since it is larger than the sum of its proper divisors (84047073).

72195696967 is an equidigital number, since it uses as much as digits as its factorization.

72195696967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84047072.

The product of its digits is 77157360, while the sum is 67.

The spelling of 72195696967 in words is "seventy-two billion, one hundred ninety-five million, six hundred ninety-six thousand, nine hundred sixty-seven".