72298398613 has 4 divisors (see below), whose sum is σ = 82626741280. Its totient is φ = 61970055948.

The previous prime is 72298398607. The next prime is 72298398691. The reversal of 72298398613 is 31689389227.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31689389227 = 1433 ⋅22114019.

It is a cyclic number.

It is not a de Polignac number, because 72298398613 - 2¹⁷ = 72298267541 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 (72298398313) 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, 5164171323 + ... + 5164171336.

It is an arithmetic number, because the mean of its divisors is an integer number (20656685320).

Almost surely, 2^72298398613 is an apocalyptic number.

It is an amenable number.

72298398613 is a deficient number, since it is larger than the sum of its proper divisors (10328342667).

72298398613 is a wasteful number, since it uses less digits than its factorization.

72298398613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10328342666.

The product of its digits is 7838208, while the sum is 58.

The spelling of 72298398613 in words is "seventy-two billion, two hundred ninety-eight million, three hundred ninety-eight thousand, six hundred thirteen".