72195004373 has 4 divisors (see below), whose sum is σ = 72196229868. Its totient is φ = 72193778880.

The previous prime is 72195004367. The next prime is 72195004411. The reversal of 72195004373 is 37340059127.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22172103409 + 50022900964 = 148903^2 + 223658^2 .

It is a cyclic number.

It is not a de Polignac number, because 72195004373 - 2¹⁸ = 72194742229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72195004373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72195004333) 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, 519668 + ... + 643773.

It is an arithmetic number, because the mean of its divisors is an integer number (18049057467).

Almost surely, 2^72195004373 is an apocalyptic number.

It is an amenable number.

72195004373 is a deficient number, since it is larger than the sum of its proper divisors (1225495).

72195004373 is a wasteful number, since it uses less digits than its factorization.

72195004373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225494.

The product of its (nonzero) digits is 158760, while the sum is 41.

The spelling of 72195004373 in words is "seventy-two billion, one hundred ninety-five million, four thousand, three hundred seventy-three".