50512021505 has 16 divisors (see below), whose sum is σ = 68404996800. Its totient is φ = 35469255360.

The previous prime is 50512021499. The next prime is 50512021507.

50512021505 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 50512021505 - 2²⁰ = 50510972929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (50512021507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15832895 + ... + 15836084.

It is an arithmetic number, because the mean of its divisors is an integer number (4275312300).

Almost surely, 2^50512021505 is an apocalyptic number.

50512021505 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

50512021505 is a deficient number, since it is larger than the sum of its proper divisors (17892975295).

50512021505 is a wasteful number, since it uses less digits than its factorization.

50512021505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31669024.

The product of its (nonzero) digits is 2500, while the sum is 26.

It can be divided in two parts, 505120 and 21505, that added together give a palindrome (526625).

The spelling of 50512021505 in words is "fifty billion, five hundred twelve million, twenty-one thousand, five hundred five".