51736938826 has 4 divisors (see below), whose sum is σ = 77605408242. Its totient is φ = 25868469412.

The previous prime is 51736938769. The next prime is 51736938859. The reversal of 51736938826 is 62883963715.

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

It can be written as a sum of positive squares in only one way, i.e., 47610803601 + 4126135225 = 218199^2 + 64235^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12934234705 + ... + 12934234708.

Almost surely, 2^51736938826 is an apocalyptic number.

51736938826 is a deficient number, since it is larger than the sum of its proper divisors (25868469416).

51736938826 is a wasteful number, since it uses less digits than its factorization.

51736938826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25868469415.

The product of its digits is 13063680, while the sum is 58.

The spelling of 51736938826 in words is "fifty-one billion, seven hundred thirty-six million, nine hundred thirty-eight thousand, eight hundred twenty-six".