73219113257 has 2 divisors, whose sum is σ = 73219113258. Its totient is φ = 73219113256.

The previous prime is 73219113229. The next prime is 73219113281. The reversal of 73219113257 is 75231191237.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70195323136 + 3023790121 = 264944^2 + 54989^2 .

It is a cyclic number.

It is not a de Polignac number, because 73219113257 - 2³⁰ = 72145371433 is a prime.

It is a super-2 number, since 2×73219113257² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73219113287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36609556628 + 36609556629.

It is an arithmetic number, because the mean of its divisors is an integer number (36609556629).

Almost surely, 2^73219113257 is an apocalyptic number.

It is an amenable number.

73219113257 is a deficient number, since it is larger than the sum of its proper divisors (1).

73219113257 is an equidigital number, since it uses as much as digits as its factorization.

73219113257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 41.

The spelling of 73219113257 in words is "seventy-three billion, two hundred nineteen million, one hundred thirteen thousand, two hundred fifty-seven".