51424450040 has 32 divisors (see below), whose sum is σ = 115966237680. Its totient is φ = 20523340032.

The previous prime is 51424450027. The next prime is 51424450043. The reversal of 51424450040 is 4005442415.

It is a junction number, because it is equal to n+sod(n) for n = 51424449985 and 51424450012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51424450043) 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, 1433309 + ... + 1468748.

Almost surely, 2^51424450040 is an apocalyptic number.

It is an amenable number.

51424450040 is an abundant number, since it is smaller than the sum of its proper divisors (64541787640).

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

51424450040 is a wasteful number, since it uses less digits than its factorization.

51424450040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2902511 (or 2902507 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 29.

Adding to 51424450040 its reverse (4005442415), we get a palindrome (55429892455).

The spelling of 51424450040 in words is "fifty-one billion, four hundred twenty-four million, four hundred fifty thousand, forty".