72641313323 has 4 divisors (see below), whose sum is σ = 76464540360. Its totient is φ = 68818086288.

The previous prime is 72641313299. The next prime is 72641313341. The reversal of 72641313323 is 32331314627.

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

It is a cyclic number.

It is not a de Polignac number, because 72641313323 - 2⁸ = 72641313067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72641313923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1911613490 + ... + 1911613527.

It is an arithmetic number, because the mean of its divisors is an integer number (19116135090).

Almost surely, 2^72641313323 is an apocalyptic number.

72641313323 is a deficient number, since it is larger than the sum of its proper divisors (3823227037).

72641313323 is a wasteful number, since it uses less digits than its factorization.

72641313323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823227036.

The product of its digits is 54432, while the sum is 35.

The spelling of 72641313323 in words is "seventy-two billion, six hundred forty-one million, three hundred thirteen thousand, three hundred twenty-three".