51354712586 has 4 divisors (see below), whose sum is σ = 77032068882. Its totient is φ = 25677356292.

The previous prime is 51354712543. The next prime is 51354712589. The reversal of 51354712586 is 68521745315.

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., 31309533025 + 20045179561 = 176945^2 + 141581^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51354712586.

It is not an unprimeable number, because it can be changed into a prime (51354712589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12838678145 + ... + 12838678148.

Almost surely, 2^51354712586 is an apocalyptic number.

51354712586 is a deficient number, since it is larger than the sum of its proper divisors (25677356296).

51354712586 is a wasteful number, since it uses less digits than its factorization.

51354712586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25677356295.

The product of its digits is 1008000, while the sum is 47.

The spelling of 51354712586 in words is "fifty-one billion, three hundred fifty-four million, seven hundred twelve thousand, five hundred eighty-six".