77948006419 has 2 divisors, whose sum is σ = 77948006420. Its totient is φ = 77948006418.

The previous prime is 77948006371. The next prime is 77948006429. The reversal of 77948006419 is 91460084977.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77948006419 - 2²¹ = 77945909267 is a prime.

It is a super-2 number, since 2×77948006419² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 77948006419.

It is not a weakly prime, because it can be changed into another prime (77948006429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38974003209 + 38974003210.

It is an arithmetic number, because the mean of its divisors is an integer number (38974003210).

Almost surely, 2^77948006419 is an apocalyptic number.

77948006419 is a deficient number, since it is larger than the sum of its proper divisors (1).

77948006419 is an equidigital number, since it uses as much as digits as its factorization.

77948006419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The spelling of 77948006419 in words is "seventy-seven billion, nine hundred forty-eight million, six thousand, four hundred nineteen".