61017675239 has 2 divisors, whose sum is σ = 61017675240. Its totient is φ = 61017675238.

The previous prime is 61017675203. The next prime is 61017675263. The reversal of 61017675239 is 93257671016.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61017675239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61017675193 and 61017675202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61017675839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30508837619 + 30508837620.

It is an arithmetic number, because the mean of its divisors is an integer number (30508837620).

Almost surely, 2^61017675239 is an apocalyptic number.

61017675239 is a deficient number, since it is larger than the sum of its proper divisors (1).

61017675239 is an equidigital number, since it uses as much as digits as its factorization.

61017675239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 47.

The spelling of 61017675239 in words is "sixty-one billion, seventeen million, six hundred seventy-five thousand, two hundred thirty-nine".