61474819867 has 2 divisors, whose sum is σ = 61474819868. Its totient is φ = 61474819866.

The previous prime is 61474819853. The next prime is 61474819873. The reversal of 61474819867 is 76891847416.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61474819867 is a prime.

It is not a weakly prime, because it can be changed into another prime (61474813867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30737409933 + 30737409934.

It is an arithmetic number, because the mean of its divisors is an integer number (30737409934).

Almost surely, 2^61474819867 is an apocalyptic number.

61474819867 is a deficient number, since it is larger than the sum of its proper divisors (1).

61474819867 is an equidigital number, since it uses as much as digits as its factorization.

61474819867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16257024, while the sum is 61.

The spelling of 61474819867 in words is "sixty-one billion, four hundred seventy-four million, eight hundred nineteen thousand, eight hundred sixty-seven".