51219703296 has 280 divisors, whose sum is σ = 157228233624. Its totient is φ = 16651837440.

The previous prime is 51219703289. The next prime is 51219703303. The reversal of 51219703296 is 69230791215.

It is a happy number.

51219703296 is a `hidden beast` number, since 512 + 19 + 7 + 0 + 32 + 96 = 666.

51219703296 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51219703289) and next prime (51219703303).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 15301495 + ... + 15304841.

Almost surely, 2^51219703296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51219703296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78614116812).

51219703296 is an abundant number, since it is smaller than the sum of its proper divisors (106008530328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51219703296 is an frugal number, since it uses more digits than its factorization.

51219703296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424 (or 3393 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 51219703296 in words is "fifty-one billion, two hundred nineteen million, seven hundred three thousand, two hundred ninety-six".