51351862199 has 4 divisors (see below), whose sum is σ = 56020213320. Its totient is φ = 46683511080.

The previous prime is 51351862193. The next prime is 51351862217. The reversal of 51351862199 is 99126815315.

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

It is a cyclic number.

It is not a de Polignac number, because 51351862199 - 2⁴ = 51351862183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51351862193) 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, 2334175544 + ... + 2334175565.

It is an arithmetic number, because the mean of its divisors is an integer number (14005053330).

Almost surely, 2^51351862199 is an apocalyptic number.

51351862199 is a deficient number, since it is larger than the sum of its proper divisors (4668351121).

51351862199 is a wasteful number, since it uses less digits than its factorization.

51351862199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668351120.

The product of its digits is 583200, while the sum is 50.

The spelling of 51351862199 in words is "fifty-one billion, three hundred fifty-one million, eight hundred sixty-two thousand, one hundred ninety-nine".