51348775811 has 8 divisors (see below), whose sum is σ = 52566519984. Its totient is φ = 50132103840.

The previous prime is 51348775801. The next prime is 51348775823. The reversal of 51348775811 is 11857784315.

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

It is not a de Polignac number, because 51348775811 - 2¹⁰ = 51348774787 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51348775811.

It is not an unprimeable number, because it can be changed into a prime (51348775801) 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, 170720 + ... + 363101.

It is an arithmetic number, because the mean of its divisors is an integer number (6570814998).

Almost surely, 2^51348775811 is an apocalyptic number.

51348775811 is a deficient number, since it is larger than the sum of its proper divisors (1217744173).

51348775811 is a wasteful number, since it uses less digits than its factorization.

51348775811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536101.

The product of its digits is 940800, while the sum is 50.

The spelling of 51348775811 in words is "fifty-one billion, three hundred forty-eight million, seven hundred seventy-five thousand, eight hundred eleven".