51201100199 has 2 divisors, whose sum is σ = 51201100200. Its totient is φ = 51201100198.

The previous prime is 51201100169. The next prime is 51201100207. The reversal of 51201100199 is 99100110215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51201100199 - 2¹² = 51201096103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51201100169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25600550099 + 25600550100.

It is an arithmetic number, because the mean of its divisors is an integer number (25600550100).

Almost surely, 2^51201100199 is an apocalyptic number.

51201100199 is a deficient number, since it is larger than the sum of its proper divisors (1).

51201100199 is an equidigital number, since it uses as much as digits as its factorization.

51201100199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 29.

The spelling of 51201100199 in words is "fifty-one billion, two hundred one million, one hundred thousand, one hundred ninety-nine".