51245430014440 has 32 divisors (see below), whose sum is σ = 115324481412000. Its totient is φ = 20494213982784.

The previous prime is 51245430014423. The next prime is 51245430014447. The reversal of 51245430014440 is 4441003454215.

It is a self number, because there is not a number n which added to its sum of digits gives 51245430014440.

It is not an unprimeable number, because it can be changed into a prime (51245430014447) 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, 123478470 + ... + 123892789.

It is an arithmetic number, because the mean of its divisors is an integer number (3603890044125).

Almost surely, 2^{51245430014440} is an apocalyptic number.

It is an amenable number.

51245430014440 is an abundant number, since it is smaller than the sum of its proper divisors (64079051397560).

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

51245430014440 is a wasteful number, since it uses less digits than its factorization.

51245430014440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247376449 (or 247376445 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 51245430014440 its reverse (4441003454215), we get a palindrome (55686433468655).

The spelling of 51245430014440 in words is "fifty-one trillion, two hundred forty-five billion, four hundred thirty million, fourteen thousand, four hundred forty".