72858367718 has 4 divisors (see below), whose sum is σ = 109287551580. Its totient is φ = 36429183858.

The previous prime is 72858367669. The next prime is 72858367759. The reversal of 72858367718 is 81776385827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81776385827 = 569 ⋅143719483.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18214591928 + ... + 18214591931.

It is an arithmetic number, because the mean of its divisors is an integer number (27321887895).

Almost surely, 2^72858367718 is an apocalyptic number.

72858367718 is a deficient number, since it is larger than the sum of its proper divisors (36429183862).

72858367718 is a wasteful number, since it uses less digits than its factorization.

72858367718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36429183861.

The product of its digits is 31610880, while the sum is 62.

The spelling of 72858367718 in words is "seventy-two billion, eight hundred fifty-eight million, three hundred sixty-seven thousand, seven hundred eighteen".