51051016504 has 128 divisors (see below), whose sum is σ = 103272744960. Its totient is φ = 23616000000.

The previous prime is 51051016501. The next prime is 51051016529. The reversal of 51051016504 is 40561015015.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51051016501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 203390379 + ... + 203390629.

It is an arithmetic number, because the mean of its divisors is an integer number (806818320).

Almost surely, 2^51051016504 is an apocalyptic number.

It is an amenable number.

51051016504 is an abundant number, since it is smaller than the sum of its proper divisors (52221728456).

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

51051016504 is a wasteful number, since it uses less digits than its factorization.

51051016504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 51051016504 in words is "fifty-one billion, fifty-one million, sixteen thousand, five hundred four".