51545143434 has 32 divisors (see below), whose sum is σ = 108562697280. Its totient is φ = 16270422912.

The previous prime is 51545143423. The next prime is 51545143457. The reversal of 51545143434 is 43434154515.

It is a junction number, because it is equal to n+sod(n) for n = 51545143392 and 51545143401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172782 + ... + 364614.

It is an arithmetic number, because the mean of its divisors is an integer number (3392584290).

Almost surely, 2^51545143434 is an apocalyptic number.

51545143434 is an abundant number, since it is smaller than the sum of its proper divisors (57017553846).

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

51545143434 is a wasteful number, since it uses less digits than its factorization.

51545143434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194214.

The product of its digits is 288000, while the sum is 39.

Adding to 51545143434 its reverse (43434154515), we get a palindrome (94979297949).

The spelling of 51545143434 in words is "fifty-one billion, five hundred forty-five million, one hundred forty-three thousand, four hundred thirty-four".