51583144199 has 4 divisors (see below), whose sum is σ = 51583663560. Its totient is φ = 51582624840.

The previous prime is 51583144187. The next prime is 51583144231. The reversal of 51583144199 is 99144138515.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 99144138515 = 5 ⋅19828827703.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51583144199 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 (51583144159) 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, 59009 + ... + 326570.

It is an arithmetic number, because the mean of its divisors is an integer number (12895915890).

Almost surely, 2^51583144199 is an apocalyptic number.

51583144199 is a deficient number, since it is larger than the sum of its proper divisors (519361).

51583144199 is a wasteful number, since it uses less digits than its factorization.

51583144199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519360.

The product of its digits is 777600, while the sum is 50.

The spelling of 51583144199 in words is "fifty-one billion, five hundred eighty-three million, one hundred forty-four thousand, one hundred ninety-nine".