51943376236 has 6 divisors (see below), whose sum is σ = 90900908420. Its totient is φ = 25971688116.

The previous prime is 51943376231. The next prime is 51943376239. The reversal of 51943376236 is 63267334915.

It is a super-2 number, since 2×51943376236² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51943376236.

It is not an unprimeable number, because it can be changed into a prime (51943376231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6492922026 + ... + 6492922033.

Almost surely, 2^51943376236 is an apocalyptic number.

It is an amenable number.

51943376236 is a deficient number, since it is larger than the sum of its proper divisors (38957532184).

51943376236 is a wasteful number, since it uses less digits than its factorization.

51943376236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12985844063 (or 12985844061 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 49.

The spelling of 51943376236 in words is "fifty-one billion, nine hundred forty-three million, three hundred seventy-six thousand, two hundred thirty-six".