51440425332 has 24 divisors (see below), whose sum is σ = 120201379872. Its totient is φ = 17121991200.

The previous prime is 51440425277. The next prime is 51440425357. The reversal of 51440425332 is 23352404415.

It is a super-2 number, since 2×51440425332² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51440425293 and 51440425302.

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, 3093519 + ... + 3110102.

It is an arithmetic number, because the mean of its divisors is an integer number (5008390828).

Almost surely, 2^51440425332 is an apocalyptic number.

It is an amenable number.

51440425332 is an abundant number, since it is smaller than the sum of its proper divisors (68760954540).

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

51440425332 is a wasteful number, since it uses less digits than its factorization.

51440425332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6204319 (or 6204317 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 51440425332 its reverse (23352404415), we get a palindrome (74792829747).

The spelling of 51440425332 in words is "fifty-one billion, four hundred forty million, four hundred twenty-five thousand, three hundred thirty-two".