51251102764 has 12 divisors (see below), whose sum is σ = 89723511864. Its totient is φ = 25615813664.

The previous prime is 51251102753. The next prime is 51251102789. The reversal of 51251102764 is 46720115215.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2422582 + ... + 2443645.

It is an arithmetic number, because the mean of its divisors is an integer number (7476959322).

Almost surely, 2^51251102764 is an apocalyptic number.

It is an amenable number.

51251102764 is a deficient number, since it is larger than the sum of its proper divisors (38472409100).

51251102764 is a wasteful number, since it uses less digits than its factorization.

51251102764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4868864 (or 4868862 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

Adding to 51251102764 its reverse (46720115215), we get a palindrome (97971217979).

The spelling of 51251102764 in words is "fifty-one billion, two hundred fifty-one million, one hundred two thousand, seven hundred sixty-four".