51010078459 has 4 divisors (see below), whose sum is σ = 51874656120. Its totient is φ = 50145500800.

The previous prime is 51010078429. The next prime is 51010078463. The reversal of 51010078459 is 95487001015.

It is a happy number.

51010078459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51010078459 - 2²¹ = 51007981307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51010078429) 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, 432288742 + ... + 432288859.

It is an arithmetic number, because the mean of its divisors is an integer number (12968664030).

Almost surely, 2^51010078459 is an apocalyptic number.

51010078459 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

51010078459 is a deficient number, since it is larger than the sum of its proper divisors (864577661).

51010078459 is an equidigital number, since it uses as much as digits as its factorization.

51010078459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864577660.

The product of its (nonzero) digits is 50400, while the sum is 40.

The spelling of 51010078459 in words is "fifty-one billion, ten million, seventy-eight thousand, four hundred fifty-nine".