51435231488 has 36 divisors (see below), whose sum is σ = 106209888540. Its totient is φ = 24830797824.

The previous prime is 51435231487. The next prime is 51435231511. The reversal of 51435231488 is 88413253415.

51435231488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 26202544384 + 25232687104 = 161872^2 + 158848^2 .

It is not an unprimeable number, because it can be changed into a prime (51435231487) 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, 3456695 + ... + 3471542.

Almost surely, 2^51435231488 is an apocalyptic number.

51435231488 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

51435231488 is an abundant number, since it is smaller than the sum of its proper divisors (54774657052).

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

51435231488 is an equidigital number, since it uses as much as digits as its factorization.

51435231488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6928282 (or 6928268 counting only the distinct ones).

The product of its digits is 460800, while the sum is 44.

The spelling of 51435231488 in words is "fifty-one billion, four hundred thirty-five million, two hundred thirty-one thousand, four hundred eighty-eight".