51021075884 has 24 divisors (see below), whose sum is σ = 89949300000. Its totient is φ = 25321887360.

The previous prime is 51021075883. The next prime is 51021075893. The reversal of 51021075884 is 48857012015.

It is not an unprimeable number, because it can be changed into a prime (51021075883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258992 + ... + 411240.

It is an arithmetic number, because the mean of its divisors is an integer number (3747887500).

Almost surely, 2^51021075884 is an apocalyptic number.

It is an amenable number.

51021075884 is a deficient number, since it is larger than the sum of its proper divisors (38928224116).

51021075884 is a wasteful number, since it uses less digits than its factorization.

51021075884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152873 (or 152871 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 41.

Adding to 51021075884 its reverse (48857012015), we get a palindrome (99878087899).

The spelling of 51021075884 in words is "fifty-one billion, twenty-one million, seventy-five thousand, eight hundred eighty-four".