51443211504 has 40 divisors (see below), whose sum is σ = 132986984320. Its totient is φ = 17135863488.

The previous prime is 51443211499. The next prime is 51443211511. The reversal of 51443211504 is 40511234415.

51443211504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300874 + ... + 439785.

It is an arithmetic number, because the mean of its divisors is an integer number (3324674608).

Almost surely, 2^51443211504 is an apocalyptic number.

It is an amenable number.

51443211504 is an abundant number, since it is smaller than the sum of its proper divisors (81543772816).

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

51443211504 is a wasteful number, since it uses less digits than its factorization.

51443211504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742117 (or 742111 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 51443211504 its reverse (40511234415), we get a palindrome (91954445919).

The spelling of 51443211504 in words is "fifty-one billion, four hundred forty-three million, two hundred eleven thousand, five hundred four".