828778770419 has 2 divisors, whose sum is σ = 828778770420. Its totient is φ = 828778770418.

The previous prime is 828778770401. The next prime is 828778770427. The reversal of 828778770419 is 914077877828.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 828778770419 - 2⁸ = 828778770163 is a prime.

It is a super-2 number, since 2×828778770419² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (828778770119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414389385209 + 414389385210.

It is an arithmetic number, because the mean of its divisors is an integer number (414389385210).

Almost surely, 2^828778770419 is an apocalyptic number.

828778770419 is a deficient number, since it is larger than the sum of its proper divisors (1).

828778770419 is an equidigital number, since it uses as much as digits as its factorization.

828778770419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88510464, while the sum is 68.

The spelling of 828778770419 in words is "eight hundred twenty-eight billion, seven hundred seventy-eight million, seven hundred seventy thousand, four hundred nineteen".