73207042613 has 2 divisors, whose sum is σ = 73207042614. Its totient is φ = 73207042612.

The previous prime is 73207042607. The next prime is 73207042681. The reversal of 73207042613 is 31624070237.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60369472804 + 12837569809 = 245702^2 + 113303^2 .

It is a cyclic number.

It is not a de Polignac number, because 73207042613 - 2⁸ = 73207042357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73207042213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36603521306 + 36603521307.

It is an arithmetic number, because the mean of its divisors is an integer number (36603521307).

Almost surely, 2^73207042613 is an apocalyptic number.

It is an amenable number.

73207042613 is a deficient number, since it is larger than the sum of its proper divisors (1).

73207042613 is an equidigital number, since it uses as much as digits as its factorization.

73207042613 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 35.

The spelling of 73207042613 in words is "seventy-three billion, two hundred seven million, forty-two thousand, six hundred thirteen".