551402440504 has 32 divisors (see below), whose sum is σ = 1044606961440. Its totient is φ = 272843152000.

The previous prime is 551402440487. The next prime is 551402440513. The reversal of 551402440504 is 405044204155.

It is a self number, because there is not a number n which added to its sum of digits gives 551402440504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1570557 + ... + 1889299.

It is an arithmetic number, because the mean of its divisors is an integer number (32643967545).

Almost surely, 2^551402440504 is an apocalyptic number.

It is an amenable number.

551402440504 is a deficient number, since it is larger than the sum of its proper divisors (493204520936).

551402440504 is a wasteful number, since it uses less digits than its factorization.

551402440504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320991 (or 320987 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 551402440504 its reverse (405044204155), we get a palindrome (956446644659).

The spelling of 551402440504 in words is "five hundred fifty-one billion, four hundred two million, four hundred forty thousand, five hundred four".