72642967513 has 4 divisors (see below), whose sum is σ = 72647618688. Its totient is φ = 72638316340.

The previous prime is 72642967489. The next prime is 72642967547. The reversal of 72642967513 is 31576924627.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72642967513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72642967583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2302081 + ... + 2333422.

It is an arithmetic number, because the mean of its divisors is an integer number (18161904672).

Almost surely, 2^72642967513 is an apocalyptic number.

It is an amenable number.

72642967513 is a deficient number, since it is larger than the sum of its proper divisors (4651175).

72642967513 is a wasteful number, since it uses less digits than its factorization.

72642967513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4651174.

The product of its digits is 3810240, while the sum is 52.

The spelling of 72642967513 in words is "seventy-two billion, six hundred forty-two million, nine hundred sixty-seven thousand, five hundred thirteen".