72345654328 has 32 divisors (see below), whose sum is σ = 136802856960. Its totient is φ = 35866149760.

The previous prime is 72345654301. The next prime is 72345654331. The reversal of 72345654328 is 82345654327.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383433 + ... + 540103.

It is an arithmetic number, because the mean of its divisors is an integer number (4275089280).

Almost surely, 2^72345654328 is an apocalyptic number.

It is an amenable number.

72345654328 is a deficient number, since it is larger than the sum of its proper divisors (64457202632).

72345654328 is a wasteful number, since it uses less digits than its factorization.

72345654328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157167 (or 157163 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 49.

Subtracting 72345654328 from its reverse (82345654327), we obtain a palindrome (9999999999).

The spelling of 72345654328 in words is "seventy-two billion, three hundred forty-five million, six hundred fifty-four thousand, three hundred twenty-eight".