72655335033731 has 2 divisors, whose sum is σ = 72655335033732. Its totient is φ = 72655335033730.

The previous prime is 72655335033647. The next prime is 72655335033817. The reversal of 72655335033731 is 13733053355627.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72655335033731 is a prime.

It is a super-2 number, since 2×72655335033731² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72655335033031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36327667516865 + 36327667516866.

It is an arithmetic number, because the mean of its divisors is an integer number (36327667516866).

Almost surely, 2^{72655335033731} is an apocalyptic number.

72655335033731 is a deficient number, since it is larger than the sum of its proper divisors (1).

72655335033731 is an equidigital number, since it uses as much as digits as its factorization.

72655335033731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17860500, while the sum is 53.

The spelling of 72655335033731 in words is "seventy-two trillion, six hundred fifty-five billion, three hundred thirty-five million, thirty-three thousand, seven hundred thirty-one".