51060200691 has 4 divisors (see below), whose sum is σ = 68080267592. Its totient is φ = 34040133792.

The previous prime is 51060200683. The next prime is 51060200701. The reversal of 51060200691 is 19600206015.

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

It is not a de Polignac number, because 51060200691 - 2³ = 51060200683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51060200671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8510033446 + ... + 8510033451.

It is an arithmetic number, because the mean of its divisors is an integer number (17020066898).

Almost surely, 2^51060200691 is an apocalyptic number.

51060200691 is a deficient number, since it is larger than the sum of its proper divisors (17020066901).

51060200691 is a wasteful number, since it uses less digits than its factorization.

51060200691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17020066900.

The product of its (nonzero) digits is 3240, while the sum is 30.

The spelling of 51060200691 in words is "fifty-one billion, sixty million, two hundred thousand, six hundred ninety-one".