5000778421 has 4 divisors (see below), whose sum is σ = 5000920000. Its totient is φ = 5000636844.

The previous prime is 5000778413. The next prime is 5000778437. The reversal of 5000778421 is 1248770005.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5000778421 - 2³ = 5000778413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5000778221) 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, 30580 + ... + 104578.

It is an arithmetic number, because the mean of its divisors is an integer number (1250230000).

Almost surely, 2^5000778421 is an apocalyptic number.

It is an amenable number.

5000778421 is a deficient number, since it is larger than the sum of its proper divisors (141579).

5000778421 is an equidigital number, since it uses as much as digits as its factorization.

5000778421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141578.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 5000778421 is about 70716.1821721167. The cubic root of 5000778421 is about 1710.0646808178.

The spelling of 5000778421 in words is "five billion, seven hundred seventy-eight thousand, four hundred twenty-one".