51469580779 has 4 divisors (see below), whose sum is σ = 51470159184. Its totient is φ = 51469002376.

The previous prime is 51469580777. The next prime is 51469580809. The reversal of 51469580779 is 97708596415.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 51469580779 - 2¹ = 51469580777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51469580777) 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, 124432 + ... + 344125.

It is an arithmetic number, because the mean of its divisors is an integer number (12867539796).

Almost surely, 2^51469580779 is an apocalyptic number.

51469580779 is a deficient number, since it is larger than the sum of its proper divisors (578405).

51469580779 is a wasteful number, since it uses less digits than its factorization.

51469580779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578404.

The product of its (nonzero) digits is 19051200, while the sum is 61.

The spelling of 51469580779 in words is "fifty-one billion, four hundred sixty-nine million, five hundred eighty thousand, seven hundred seventy-nine".