61886470847767 has 2 divisors, whose sum is σ = 61886470847768. Its totient is φ = 61886470847766.

The previous prime is 61886470847693. The next prime is 61886470847909. The reversal of 61886470847767 is 76774807468816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61886470847767 - 2⁷ = 61886470847639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61886470947767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30943235423883 + 30943235423884.

It is an arithmetic number, because the mean of its divisors is an integer number (30943235423884).

Almost surely, 2^{61886470847767} is an apocalyptic number.

61886470847767 is a deficient number, since it is larger than the sum of its proper divisors (1).

61886470847767 is an equidigital number, since it uses as much as digits as its factorization.

61886470847767 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4248502272, while the sum is 79.

The spelling of 61886470847767 in words is "sixty-one trillion, eight hundred eighty-six billion, four hundred seventy million, eight hundred forty-seven thousand, seven hundred sixty-seven".