50513471999 has 4 divisors (see below), whose sum is σ = 52709709936. Its totient is φ = 48317234064.

The previous prime is 50513471977. The next prime is 50513472007. The reversal of 50513471999 is 99917431505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99917431505 = 5 ⋅19983486301.

It is a cyclic number.

It is not a de Polignac number, because 50513471999 - 2¹² = 50513467903 is a prime.

It is a super-2 number, since 2×50513471999² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50513471999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50513471909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1098118934 + ... + 1098118979.

It is an arithmetic number, because the mean of its divisors is an integer number (13177427484).

Almost surely, 2^50513471999 is an apocalyptic number.

50513471999 is a deficient number, since it is larger than the sum of its proper divisors (2196237937).

50513471999 is a wasteful number, since it uses less digits than its factorization.

50513471999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196237936.

The product of its (nonzero) digits is 1530900, while the sum is 53.

The spelling of 50513471999 in words is "fifty billion, five hundred thirteen million, four hundred seventy-one thousand, nine hundred ninety-nine".