51790781242 has 8 divisors (see below), whose sum is σ = 77704322976. Its totient is φ = 25889340252.

The previous prime is 51790781221. The next prime is 51790781291. The reversal of 51790781242 is 24218709715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 51790781192 and 51790781201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3014478 + ... + 3031609.

It is an arithmetic number, because the mean of its divisors is an integer number (9713040372).

Almost surely, 2^51790781242 is an apocalyptic number.

51790781242 is a deficient number, since it is larger than the sum of its proper divisors (25913541734).

51790781242 is a wasteful number, since it uses less digits than its factorization.

51790781242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6050372.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 51790781242 in words is "fifty-one billion, seven hundred ninety million, seven hundred eighty-one thousand, two hundred forty-two".