51863677311 has 4 divisors (see below), whose sum is σ = 69151569752. Its totient is φ = 34575784872.

The previous prime is 51863677303. The next prime is 51863677331. The reversal of 51863677311 is 11377636815.

It is a happy number.

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

It is not a de Polignac number, because 51863677311 - 2³ = 51863677303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51863677331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8643946216 + ... + 8643946221.

It is an arithmetic number, because the mean of its divisors is an integer number (17287892438).

Almost surely, 2^51863677311 is an apocalyptic number.

51863677311 is a deficient number, since it is larger than the sum of its proper divisors (17287892441).

51863677311 is a wasteful number, since it uses less digits than its factorization.

51863677311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17287892440.

The product of its digits is 635040, while the sum is 48.

The spelling of 51863677311 in words is "fifty-one billion, eight hundred sixty-three million, six hundred seventy-seven thousand, three hundred eleven".