551687238044 has 12 divisors (see below), whose sum is σ = 966571389504. Its totient is φ = 275523983904.

The previous prime is 551687238029. The next prime is 551687238049. The reversal of 551687238044 is 440832786155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551687238049) 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, 79904897 + ... + 79911800.

It is an arithmetic number, because the mean of its divisors is an integer number (80547615792).

Almost surely, 2^551687238044 is an apocalyptic number.

It is an amenable number.

551687238044 is a deficient number, since it is larger than the sum of its proper divisors (414884151460).

551687238044 is a wasteful number, since it uses less digits than its factorization.

551687238044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159817564 (or 159817562 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 551687238044 in words is "five hundred fifty-one billion, six hundred eighty-seven million, two hundred thirty-eight thousand, forty-four".