51767237836 has 24 divisors (see below), whose sum is σ = 92721936384. Its totient is φ = 25275547920.

The previous prime is 51767237831. The next prime is 51767237839. The reversal of 51767237836 is 63873276715.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51767237831) 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, 720981 + ... + 789523.

It is an arithmetic number, because the mean of its divisors is an integer number (3863414016).

Almost surely, 2^51767237836 is an apocalyptic number.

It is an amenable number.

51767237836 is a deficient number, since it is larger than the sum of its proper divisors (40954698548).

51767237836 is a wasteful number, since it uses less digits than its factorization.

51767237836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72981 (or 72979 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 55.

The spelling of 51767237836 in words is "fifty-one billion, seven hundred sixty-seven million, two hundred thirty-seven thousand, eight hundred thirty-six".