72851375338 has 48 divisors (see below), whose sum is σ = 127907664840. Its totient is φ = 31028465664.

The previous prime is 72851375299. The next prime is 72851375473. The reversal of 72851375338 is 83357315827.

It can be written as a sum of positive squares in 4 ways, for example, as 55553075809 + 17298299529 = 235697^2 + 131523^2 .

It is a super-2 number, since 2×72851375338² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33836070 + ... + 33838222.

Almost surely, 2^72851375338 is an apocalyptic number.

72851375338 is a deficient number, since it is larger than the sum of its proper divisors (55056289502).

72851375338 is a wasteful number, since it uses less digits than its factorization.

72851375338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4151 (or 4144 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 52.

The spelling of 72851375338 in words is "seventy-two billion, eight hundred fifty-one million, three hundred seventy-five thousand, three hundred thirty-eight".