72983317985281 has 8 divisors (see below), whose sum is σ = 79716337914528. Its totient is φ = 66266660196000.

The previous prime is 72983317985261. The next prime is 72983317985297. The reversal of 72983317985281 is 18258971338927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72983317985281 - 2⁹ = 72983317984769 is a prime.

It is a super-2 number, since 2×72983317985281² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72983317985231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4090525660 + ... + 4090543501.

It is an arithmetic number, because the mean of its divisors is an integer number (9964542239316).

Almost surely, 2^{72983317985281} is an apocalyptic number.

It is an amenable number.

72983317985281 is a deficient number, since it is larger than the sum of its proper divisors (6733019929247).

72983317985281 is a wasteful number, since it uses less digits than its factorization.

72983317985281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8181069983.

The product of its digits is 365783040, while the sum is 73.

The spelling of 72983317985281 in words is "seventy-two trillion, nine hundred eighty-three billion, three hundred seventeen million, nine hundred eighty-five thousand, two hundred eighty-one".