51792317386 has 4 divisors (see below), whose sum is σ = 77688476082. Its totient is φ = 25896158692.

The previous prime is 51792317347. The next prime is 51792317387. The reversal of 51792317386 is 68371329715.

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., 45291926761 + 6500390625 = 212819^2 + 80625^2 .

It is not an unprimeable number, because it can be changed into a prime (51792317387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12948079345 + ... + 12948079348.

Almost surely, 2^51792317386 is an apocalyptic number.

51792317386 is a deficient number, since it is larger than the sum of its proper divisors (25896158696).

51792317386 is a wasteful number, since it uses less digits than its factorization.

51792317386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25896158695.

The product of its digits is 1905120, while the sum is 52.

The spelling of 51792317386 in words is "fifty-one billion, seven hundred ninety-two million, three hundred seventeen thousand, three hundred eighty-six".