72159738250 has 32 divisors (see below), whose sum is σ = 135761932800. Its totient is φ = 28718830800.

The previous prime is 72159738197. The next prime is 72159738251. The reversal of 72159738250 is 5283795127.

It is a junction number, because it is equal to n+sod(n) for n = 72159738194 and 72159738203.

It is not an unprimeable number, because it can be changed into a prime (72159738251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675474 + ... + 774973.

It is an arithmetic number, because the mean of its divisors is an integer number (4242560400).

Almost surely, 2^72159738250 is an apocalyptic number.

72159738250 is a deficient number, since it is larger than the sum of its proper divisors (63602194550).

72159738250 is a wasteful number, since it uses less digits than its factorization.

72159738250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450663 (or 1450653 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 72159738250 in words is "seventy-two billion, one hundred fifty-nine million, seven hundred thirty-eight thousand, two hundred fifty".