51166774535 has 8 divisors (see below), whose sum is σ = 61520761440. Its totient is φ = 40852998304.

The previous prime is 51166774517. The next prime is 51166774543. The reversal of 51166774535 is 53547766115.

51166774535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51166774535 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10049867 + ... + 10054956.

It is an arithmetic number, because the mean of its divisors is an integer number (7690095180).

Almost surely, 2^51166774535 is an apocalyptic number.

51166774535 is a deficient number, since it is larger than the sum of its proper divisors (10353986905).

51166774535 is a wasteful number, since it uses less digits than its factorization.

51166774535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20105337.

The product of its digits is 2646000, while the sum is 50.

The spelling of 51166774535 in words is "fifty-one billion, one hundred sixty-six million, seven hundred seventy-four thousand, five hundred thirty-five".