73159509623 has 2 divisors, whose sum is σ = 73159509624. Its totient is φ = 73159509622.

The previous prime is 73159509613. The next prime is 73159509649. The reversal of 73159509623 is 32690595137.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73159509623 - 2⁴ = 73159509607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73159509613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36579754811 + 36579754812.

It is an arithmetic number, because the mean of its divisors is an integer number (36579754812).

Almost surely, 2^73159509623 is an apocalyptic number.

73159509623 is a deficient number, since it is larger than the sum of its proper divisors (1).

73159509623 is an equidigital number, since it uses as much as digits as its factorization.

73159509623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1530900, while the sum is 50.

The spelling of 73159509623 in words is "seventy-three billion, one hundred fifty-nine million, five hundred nine thousand, six hundred twenty-three".