72783842318 has 16 divisors (see below), whose sum is σ = 120085141680. Its totient is φ = 33083563480.

The previous prime is 72783842239. The next prime is 72783842333. The reversal of 72783842318 is 81324838727.

It is a super-2 number, since 2×72783842318² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72783842318.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13668233 + ... + 13673556.

It is an arithmetic number, because the mean of its divisors is an integer number (7505321355).

Almost surely, 2^72783842318 is an apocalyptic number.

72783842318 is a deficient number, since it is larger than the sum of its proper divisors (47301299362).

72783842318 is a wasteful number, since it uses less digits than its factorization.

72783842318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27341824 (or 27341802 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 53.

The spelling of 72783842318 in words is "seventy-two billion, seven hundred eighty-three million, eight hundred forty-two thousand, three hundred eighteen".