51051440004 has 24 divisors (see below), whose sum is σ = 119132385120. Its totient is φ = 17015381184.

The previous prime is 51051439987. The next prime is 51051440039. The reversal of 51051440004 is 40004415015.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 97449 + ... + 334064.

It is an arithmetic number, because the mean of its divisors is an integer number (4963849380).

Almost surely, 2^51051440004 is an apocalyptic number.

It is an amenable number.

51051440004 is an abundant number, since it is smaller than the sum of its proper divisors (68080945116).

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

51051440004 is a wasteful number, since it uses less digits than its factorization.

51051440004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441379 (or 441377 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 51051440004 its reverse (40004415015), we get a palindrome (91055855019).

The spelling of 51051440004 in words is "fifty-one billion, fifty-one million, four hundred forty thousand, four".