61047327391 has 2 divisors, whose sum is σ = 61047327392. Its totient is φ = 61047327390.

The previous prime is 61047327353. The next prime is 61047327409. The reversal of 61047327391 is 19372374016.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61047327391 - 2¹¹ = 61047325343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61047327331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30523663695 + 30523663696.

It is an arithmetic number, because the mean of its divisors is an integer number (30523663696).

Almost surely, 2^61047327391 is an apocalyptic number.

61047327391 is a deficient number, since it is larger than the sum of its proper divisors (1).

61047327391 is an equidigital number, since it uses as much as digits as its factorization.

61047327391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 43.

The spelling of 61047327391 in words is "sixty-one billion, forty-seven million, three hundred twenty-seven thousand, three hundred ninety-one".