51451433432 has 16 divisors (see below), whose sum is σ = 110253071760. Its totient is φ = 22050614304.

The previous prime is 51451433431. The next prime is 51451433479. The reversal of 51451433432 is 23433415415.

It is a junction number, because it is equal to n+sod(n) for n = 51451433392 and 51451433401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51451433431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459387743 + ... + 459387854.

It is an arithmetic number, because the mean of its divisors is an integer number (6890816985).

Almost surely, 2^51451433432 is an apocalyptic number.

It is an amenable number.

51451433432 is an abundant number, since it is smaller than the sum of its proper divisors (58801638328).

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

51451433432 is a wasteful number, since it uses less digits than its factorization.

51451433432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918775610 (or 918775606 counting only the distinct ones).

The product of its digits is 86400, while the sum is 35.

Adding to 51451433432 its reverse (23433415415), we get a palindrome (74884848847).

The spelling of 51451433432 in words is "fifty-one billion, four hundred fifty-one million, four hundred thirty-three thousand, four hundred thirty-two".