72983803257 has 12 divisors (see below), whose sum is σ = 110969525680. Its totient is φ = 46095033528.

The previous prime is 72983803157. The next prime is 72983803301. The reversal of 72983803257 is 75230838927.

72983803257 is a `hidden beast` number, since 7 + 2 + 9 + 8 + 380 + 3 + 257 = 666.

It is not a de Polignac number, because 72983803257 - 2¹⁰ = 72983802233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72983803157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213402763 + ... + 213403104.

Almost surely, 2^72983803257 is an apocalyptic number.

It is an amenable number.

72983803257 is a deficient number, since it is larger than the sum of its proper divisors (37985722423).

72983803257 is a wasteful number, since it uses less digits than its factorization.

72983803257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426805892 (or 426805889 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 72983803257 in words is "seventy-two billion, nine hundred eighty-three million, eight hundred three thousand, two hundred fifty-seven".