72563706469 has 2 divisors, whose sum is σ = 72563706470. Its totient is φ = 72563706468.

The previous prime is 72563706443. The next prime is 72563706473. The reversal of 72563706469 is 96460736527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69214769569 + 3348936900 = 263087^2 + 57870^2 .

It is a cyclic number.

It is not a de Polignac number, because 72563706469 - 2¹⁵ = 72563673701 is a prime.

It is a super-2 number, since 2×72563706469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72563706269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36281853234 + 36281853235.

It is an arithmetic number, because the mean of its divisors is an integer number (36281853235).

Almost surely, 2^72563706469 is an apocalyptic number.

It is an amenable number.

72563706469 is a deficient number, since it is larger than the sum of its proper divisors (1).

72563706469 is an equidigital number, since it uses as much as digits as its factorization.

72563706469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 55.

The spelling of 72563706469 in words is "seventy-two billion, five hundred sixty-three million, seven hundred six thousand, four hundred sixty-nine".