51803776667 has 8 divisors (see below), whose sum is σ = 52763270400. Its totient is φ = 50846998504.

The previous prime is 51803776573. The next prime is 51803776679. The reversal of 51803776667 is 76667730815.

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

It is a cyclic number.

It is not a de Polignac number, because 51803776667 - 2²⁰ = 51802728091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51803776067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 640367 + ... + 716712.

It is an arithmetic number, because the mean of its divisors is an integer number (6595408800).

Almost surely, 2^51803776667 is an apocalyptic number.

51803776667 is a deficient number, since it is larger than the sum of its proper divisors (959493733).

51803776667 is a wasteful number, since it uses less digits than its factorization.

51803776667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357785.

The product of its (nonzero) digits is 8890560, while the sum is 56.

The spelling of 51803776667 in words is "fifty-one billion, eight hundred three million, seven hundred seventy-six thousand, six hundred sixty-seven".