61212703271 has 2 divisors, whose sum is σ = 61212703272. Its totient is φ = 61212703270.

The previous prime is 61212703247. The next prime is 61212703289. The reversal of 61212703271 is 17230721216.

61212703271 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 61212703271 - 2⁶ = 61212703207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61212703231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30606351635 + 30606351636.

It is an arithmetic number, because the mean of its divisors is an integer number (30606351636).

Almost surely, 2^61212703271 is an apocalyptic number.

61212703271 is a deficient number, since it is larger than the sum of its proper divisors (1).

61212703271 is an equidigital number, since it uses as much as digits as its factorization.

61212703271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The spelling of 61212703271 in words is "sixty-one billion, two hundred twelve million, seven hundred three thousand, two hundred seventy-one".