72481027857 has 32 divisors (see below), whose sum is σ = 113764485120. Its totient is φ = 40186540800.

The previous prime is 72481027813. The next prime is 72481027891. The reversal of 72481027857 is 75872018427.

It is not a de Polignac number, because 72481027857 - 2⁸ = 72481027601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72481027457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129432 + ... + 402137.

It is an arithmetic number, because the mean of its divisors is an integer number (3555140160).

Almost surely, 2^72481027857 is an apocalyptic number.

It is an amenable number.

72481027857 is a deficient number, since it is larger than the sum of its proper divisors (41283457263).

72481027857 is a wasteful number, since it uses less digits than its factorization.

72481027857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531773.

The product of its (nonzero) digits is 1756160, while the sum is 51.

The spelling of 72481027857 in words is "seventy-two billion, four hundred eighty-one million, twenty-seven thousand, eight hundred fifty-seven".