51443425011 has 32 divisors (see below), whose sum is σ = 75573202176. Its totient is φ = 30867200000.

The previous prime is 51443425001. The next prime is 51443425051. The reversal of 51443425011 is 11052434415.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51443425011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51443425011.

It is not an unprimeable number, because it can be changed into a prime (51443425001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7344511 + ... + 7351511.

It is an arithmetic number, because the mean of its divisors is an integer number (2361662568).

Almost surely, 2^51443425011 is an apocalyptic number.

51443425011 is a deficient number, since it is larger than the sum of its proper divisors (24129777165).

51443425011 is a wasteful number, since it uses less digits than its factorization.

51443425011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9203.

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

Adding to 51443425011 its reverse (11052434415), we get a palindrome (62495859426).

The spelling of 51443425011 in words is "fifty-one billion, four hundred forty-three million, four hundred twenty-five thousand, eleven".