778528006103 has 4 divisors (see below), whose sum is σ = 781185098568. Its totient is φ = 775870913640.

The previous prime is 778528006097. The next prime is 778528006121. The reversal of 778528006103 is 301600825877.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 778528006103 - 2³² = 774233038807 is a prime.

It is a super-2 number, since 2×778528006103² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778528006163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1328545793 + ... + 1328546378.

It is an arithmetic number, because the mean of its divisors is an integer number (195296274642).

Almost surely, 2^778528006103 is an apocalyptic number.

778528006103 is a deficient number, since it is larger than the sum of its proper divisors (2657092465).

778528006103 is a wasteful number, since it uses less digits than its factorization.

778528006103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657092464.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 778528006103 in words is "seven hundred seventy-eight billion, five hundred twenty-eight million, six thousand, one hundred three".