72804133757 has 8 divisors (see below), whose sum is σ = 73023283800. Its totient is φ = 72585301824.

The previous prime is 72804133711. The next prime is 72804133777. The reversal of 72804133757 is 75733140827.

It can be written as a sum of positive squares in 4 ways, for example, as 41229241 + 72762904516 = 6421^2 + 269746^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 72804133757 - 2²² = 72799939453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72804133777) 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, 382919 + ... + 540587.

It is an arithmetic number, because the mean of its divisors is an integer number (9127910475).

Almost surely, 2^72804133757 is an apocalyptic number.

It is an amenable number.

72804133757 is a deficient number, since it is larger than the sum of its proper divisors (219150043).

72804133757 is a wasteful number, since it uses less digits than its factorization.

72804133757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159055.

The product of its (nonzero) digits is 987840, while the sum is 47.

The spelling of 72804133757 in words is "seventy-two billion, eight hundred four million, one hundred thirty-three thousand, seven hundred fifty-seven".