72274211309 has 2 divisors, whose sum is σ = 72274211310. Its totient is φ = 72274211308.

The previous prime is 72274211263. The next prime is 72274211327. The reversal of 72274211309 is 90311247227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65125508809 + 7148702500 = 255197^2 + 84550^2 .

It is a cyclic number.

It is not a de Polignac number, because 72274211309 - 2¹⁶ = 72274145773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72274711309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36137105654 + 36137105655.

It is an arithmetic number, because the mean of its divisors is an integer number (36137105655).

Almost surely, 2^72274211309 is an apocalyptic number.

It is an amenable number.

72274211309 is a deficient number, since it is larger than the sum of its proper divisors (1).

72274211309 is an equidigital number, since it uses as much as digits as its factorization.

72274211309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 72274211309 in words is "seventy-two billion, two hundred seventy-four million, two hundred eleven thousand, three hundred nine".