72504253453 has 2 divisors, whose sum is σ = 72504253454. Its totient is φ = 72504253452.

The previous prime is 72504253439. The next prime is 72504253457. The reversal of 72504253453 is 35435240527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72144885604 + 359367849 = 268598^2 + 18957^2 .

It is a cyclic number.

It is not a de Polignac number, because 72504253453 - 2⁵ = 72504253421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72504253457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36252126726 + 36252126727.

It is an arithmetic number, because the mean of its divisors is an integer number (36252126727).

Almost surely, 2^72504253453 is an apocalyptic number.

It is an amenable number.

72504253453 is a deficient number, since it is larger than the sum of its proper divisors (1).

72504253453 is an equidigital number, since it uses as much as digits as its factorization.

72504253453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504000, while the sum is 40.

The spelling of 72504253453 in words is "seventy-two billion, five hundred four million, two hundred fifty-three thousand, four hundred fifty-three".