73772729713 has 2 divisors, whose sum is σ = 73772729714. Its totient is φ = 73772729712.

The previous prime is 73772729633. The next prime is 73772729717. The reversal of 73772729713 is 31792727737.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72720830224 + 1051899489 = 269668^2 + 32433^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73772729713 is a prime.

It is not a weakly prime, because it can be changed into another prime (73772729717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36886364856 + 36886364857.

It is an arithmetic number, because the mean of its divisors is an integer number (36886364857).

Almost surely, 2^73772729713 is an apocalyptic number.

It is an amenable number.

73772729713 is a deficient number, since it is larger than the sum of its proper divisors (1).

73772729713 is an equidigital number, since it uses as much as digits as its factorization.

73772729713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5445468, while the sum is 55.

The spelling of 73772729713 in words is "seventy-three billion, seven hundred seventy-two million, seven hundred twenty-nine thousand, seven hundred thirteen".