51543534355 has 4 divisors (see below), whose sum is σ = 61852241232. Its totient is φ = 41234827480.

The previous prime is 51543534347. The next prime is 51543534407. The reversal of 51543534355 is 55343534515.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51543534355 - 2³ = 51543534347 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5154353431 + ... + 5154353440.

It is an arithmetic number, because the mean of its divisors is an integer number (15463060308).

Almost surely, 2^51543534355 is an apocalyptic number.

51543534355 is a deficient number, since it is larger than the sum of its proper divisors (10308706877).

51543534355 is a wasteful number, since it uses less digits than its factorization.

51543534355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10308706876.

The product of its digits is 1350000, while the sum is 43.

The spelling of 51543534355 in words is "fifty-one billion, five hundred forty-three million, five hundred thirty-four thousand, three hundred fifty-five".