51433465855 has 4 divisors (see below), whose sum is σ = 61720159032. Its totient is φ = 41146772680.

The previous prime is 51433465849. The next prime is 51433465871. The reversal of 51433465855 is 55856433415.

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

It is not a de Polignac number, because 51433465855 - 2²⁹ = 50896594943 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51433465799 and 51433465808.

It is a congruent 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, 5143346581 + ... + 5143346590.

It is an arithmetic number, because the mean of its divisors is an integer number (15430039758).

Almost surely, 2^51433465855 is an apocalyptic number.

51433465855 is a deficient number, since it is larger than the sum of its proper divisors (10286693177).

51433465855 is a wasteful number, since it uses less digits than its factorization.

51433465855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10286693176.

The product of its digits is 4320000, while the sum is 49.

The spelling of 51433465855 in words is "fifty-one billion, four hundred thirty-three million, four hundred sixty-five thousand, eight hundred fifty-five".