551431521104 has 40 divisors (see below), whose sum is σ = 1102938074112. Its totient is φ = 266803551360.

The previous prime is 551431521097. The next prime is 551431521107. The reversal of 551431521104 is 401125134155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551431521107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9878777 + ... + 9934439.

Almost surely, 2^551431521104 is an apocalyptic number.

It is an amenable number.

551431521104 is an abundant number, since it is smaller than the sum of its proper divisors (551506553008).

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

551431521104 is a wasteful number, since it uses less digits than its factorization.

551431521104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75675 (or 75669 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 551431521104 its reverse (401125134155), we get a palindrome (952556655259).

The spelling of 551431521104 in words is "five hundred fifty-one billion, four hundred thirty-one million, five hundred twenty-one thousand, one hundred four".