61946850271 has 2 divisors, whose sum is σ = 61946850272. Its totient is φ = 61946850270.

The previous prime is 61946850263. The next prime is 61946850299. The reversal of 61946850271 is 17205864916.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61946850271 - 2³ = 61946850263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61946830271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30973425135 + 30973425136.

It is an arithmetic number, because the mean of its divisors is an integer number (30973425136).

Almost surely, 2^61946850271 is an apocalyptic number.

61946850271 is a deficient number, since it is larger than the sum of its proper divisors (1).

61946850271 is an equidigital number, since it uses as much as digits as its factorization.

61946850271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 61946850271 in words is "sixty-one billion, nine hundred forty-six million, eight hundred fifty thousand, two hundred seventy-one".