72338346436 has 6 divisors (see below), whose sum is σ = 126592106270. Its totient is φ = 36169173216.

The previous prime is 72338346407. The next prime is 72338346481. The reversal of 72338346436 is 63464383327.

It can be written as a sum of positive squares in only one way, i.e., 53942849536 + 18395496900 = 232256^2 + 135630^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72338346436.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9042293301 + ... + 9042293308.

Almost surely, 2^72338346436 is an apocalyptic number.

It is an amenable number.

72338346436 is a deficient number, since it is larger than the sum of its proper divisors (54253759834).

72338346436 is a wasteful number, since it uses less digits than its factorization.

72338346436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18084586613 (or 18084586611 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 49.

The spelling of 72338346436 in words is "seventy-two billion, three hundred thirty-eight million, three hundred forty-six thousand, four hundred thirty-six".