504551121100 has 36 divisors (see below), whose sum is σ = 1179097161424. Its totient is φ = 186295798080.

The previous prime is 504551121091. The next prime is 504551121161. The reversal of 504551121100 is 1121155405.

It is a super-3 number, since 3×504551121100³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194056824 + ... + 194059423.

Almost surely, 2^504551121100 is an apocalyptic number.

504551121100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

504551121100 is an abundant number, since it is smaller than the sum of its proper divisors (674546040324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

504551121100 is a wasteful number, since it uses less digits than its factorization.

504551121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388116274 (or 388116267 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 25.

Adding to 504551121100 its reverse (1121155405), we get a palindrome (505672276505).

The spelling of 504551121100 in words is "five hundred four billion, five hundred fifty-one million, one hundred twenty-one thousand, one hundred".