61343607239 has 2 divisors, whose sum is σ = 61343607240. Its totient is φ = 61343607238.

The previous prime is 61343607223. The next prime is 61343607277. The reversal of 61343607239 is 93270634316.

61343607239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61343607239 - 2⁴ = 61343607223 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61343607239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61343607139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30671803619 + 30671803620.

It is an arithmetic number, because the mean of its divisors is an integer number (30671803620).

Almost surely, 2^61343607239 is an apocalyptic number.

61343607239 is a deficient number, since it is larger than the sum of its proper divisors (1).

61343607239 is an equidigital number, since it uses as much as digits as its factorization.

61343607239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 44.

The spelling of 61343607239 in words is "sixty-one billion, three hundred forty-three million, six hundred seven thousand, two hundred thirty-nine".