73839697609 has 2 divisors, whose sum is σ = 73839697610. Its totient is φ = 73839697608.

The previous prime is 73839697579. The next prime is 73839697621. The reversal of 73839697609 is 90679693837.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72307210000 + 1532487609 = 268900^2 + 39147^2 .

It is a cyclic number.

It is not a de Polignac number, because 73839697609 - 2⁵ = 73839697577 is a prime.

It is not a weakly prime, because it can be changed into another prime (73839697649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36919848804 + 36919848805.

It is an arithmetic number, because the mean of its divisors is an integer number (36919848805).

Almost surely, 2^73839697609 is an apocalyptic number.

It is an amenable number.

73839697609 is a deficient number, since it is larger than the sum of its proper divisors (1).

73839697609 is an equidigital number, since it uses as much as digits as its factorization.

73839697609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92588832, while the sum is 67.

The spelling of 73839697609 in words is "seventy-three billion, eight hundred thirty-nine million, six hundred ninety-seven thousand, six hundred nine".