5258776778 has 4 divisors (see below), whose sum is σ = 7888165170. Its totient is φ = 2629388388.

The previous prime is 5258776771. The next prime is 5258776781. The reversal of 5258776778 is 8776778525.

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

It can be written as a sum of positive squares in only one way, i.e., 4800688369 + 458088409 = 69287^2 + 21403^2 .

It is a super-2 number, since 2×5258776778² = 55309466401664122568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5258776778.

It is not an unprimeable number, because it can be changed into a prime (5258776771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1314694193 + ... + 1314694196.

Almost surely, 2^5258776778 is an apocalyptic number.

5258776778 is a deficient number, since it is larger than the sum of its proper divisors (2629388392).

5258776778 is a wasteful number, since it uses less digits than its factorization.

5258776778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2629388391.

The product of its digits is 46099200, while the sum is 62.

The square root of 5258776778 is about 72517.4239614177. The cubic root of 5258776778 is about 1738.9813011424.

The spelling of 5258776778 in words is "five billion, two hundred fifty-eight million, seven hundred seventy-six thousand, seven hundred seventy-eight".