61583799427 has 2 divisors, whose sum is σ = 61583799428. Its totient is φ = 61583799426.

The previous prime is 61583799413. The next prime is 61583799437. The reversal of 61583799427 is 72499738516.

61583799427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61583799427 - 2¹⁹ = 61583275139 is a prime.

It is not a weakly prime, because it can be changed into another prime (61583799437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30791899713 + 30791899714.

It is an arithmetic number, because the mean of its divisors is an integer number (30791899714).

Almost surely, 2^61583799427 is an apocalyptic number.

61583799427 is a deficient number, since it is larger than the sum of its proper divisors (1).

61583799427 is an equidigital number, since it uses as much as digits as its factorization.

61583799427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22861440, while the sum is 61.

The spelling of 61583799427 in words is "sixty-one billion, five hundred eighty-three million, seven hundred ninety-nine thousand, four hundred twenty-seven".