51442097790 has 64 divisors (see below), whose sum is σ = 124027656192. Its totient is φ = 13655020800.

The previous prime is 51442097771. The next prime is 51442097797. The reversal of 51442097790 is 9779024415.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51442097797) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19258155 + ... + 19260825.

It is an arithmetic number, because the mean of its divisors is an integer number (1937932128).

Almost surely, 2^51442097790 is an apocalyptic number.

51442097790 is an abundant number, since it is smaller than the sum of its proper divisors (72585558402).

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

51442097790 is a wasteful number, since it uses less digits than its factorization.

51442097790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5385.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 51442097790 in words is "fifty-one billion, four hundred forty-two million, ninety-seven thousand, seven hundred ninety".