72053053817 has 2 divisors, whose sum is σ = 72053053818. Its totient is φ = 72053053816.

The previous prime is 72053053801. The next prime is 72053053841. The reversal of 72053053817 is 71835035027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49737474361 + 22315579456 = 223019^2 + 149384^2 .

It is a cyclic number.

It is not a de Polignac number, because 72053053817 - 2⁴ = 72053053801 is a prime.

It is not a weakly prime, because it can be changed into another prime (72053053847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36026526908 + 36026526909.

It is an arithmetic number, because the mean of its divisors is an integer number (36026526909).

Almost surely, 2^72053053817 is an apocalyptic number.

It is an amenable number.

72053053817 is a deficient number, since it is larger than the sum of its proper divisors (1).

72053053817 is an equidigital number, since it uses as much as digits as its factorization.

72053053817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 72053053817 in words is "seventy-two billion, fifty-three million, fifty-three thousand, eight hundred seventeen".