51086010506 has 4 divisors (see below), whose sum is σ = 76629015762. Its totient is φ = 25543005252.

The previous prime is 51086010461. The next prime is 51086010509. The reversal of 51086010506 is 60501068015.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60501068015 = 5 ⋅12100213603.

It can be written as a sum of positive squares in only one way, i.e., 37824415225 + 13261595281 = 194485^2 + 115159^2 .

It is not an unprimeable number, because it can be changed into a prime (51086010509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12771502625 + ... + 12771502628.

Almost surely, 2^51086010506 is an apocalyptic number.

51086010506 is a deficient number, since it is larger than the sum of its proper divisors (25543005256).

51086010506 is a wasteful number, since it uses less digits than its factorization.

51086010506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25543005255.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 51086010506 in words is "fifty-one billion, eighty-six million, ten thousand, five hundred six".