51310443572 has 24 divisors (see below), whose sum is σ = 91165701984. Its totient is φ = 25263371232.

The previous prime is 51310443571. The next prime is 51310443577. The reversal of 51310443572 is 27534401315.

It is a super-2 number, since 2×51310443572² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51310443571) 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, 760103 + ... + 824849.

It is an arithmetic number, because the mean of its divisors is an integer number (3798570916).

Almost surely, 2^51310443572 is an apocalyptic number.

It is an amenable number.

51310443572 is a deficient number, since it is larger than the sum of its proper divisors (39855258412).

51310443572 is a wasteful number, since it uses less digits than its factorization.

51310443572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67775 (or 67773 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

Adding to 51310443572 its reverse (27534401315), we get a palindrome (78844844887).

The spelling of 51310443572 in words is "fifty-one billion, three hundred ten million, four hundred forty-three thousand, five hundred seventy-two".