500054509951 has 4 divisors (see below), whose sum is σ = 500126353504. Its totient is φ = 499982666400.

The previous prime is 500054509859. The next prime is 500054509979. The reversal of 500054509951 is 159905450005.

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 500054509951 - 2¹¹ = 500054507903 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 500054509898 and 500054509907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500054509151) 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, 35911335 + ... + 35925256.

It is an arithmetic number, because the mean of its divisors is an integer number (125031588376).

Almost surely, 2^500054509951 is an apocalyptic number.

500054509951 is a deficient number, since it is larger than the sum of its proper divisors (71843553).

500054509951 is an equidigital number, since it uses as much as digits as its factorization.

500054509951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71843552.

The product of its (nonzero) digits is 202500, while the sum is 43.

Adding to 500054509951 its reverse (159905450005), we get a palindrome (659959959956).

The spelling of 500054509951 in words is "five hundred billion, fifty-four million, five hundred nine thousand, nine hundred fifty-one".