551466302440 has 32 divisors (see below), whose sum is σ = 1240961287680. Its totient is φ = 220557701952.

The previous prime is 551466302423. The next prime is 551466302459. The reversal of 551466302440 is 44203664155.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 551466302393 and 551466302402.

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, 589272 + ... + 1204231.

It is an arithmetic number, because the mean of its divisors is an integer number (38780040240).

Almost surely, 2^551466302440 is an apocalyptic number.

It is an amenable number.

551466302440 is an abundant number, since it is smaller than the sum of its proper divisors (689494985240).

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

551466302440 is a wasteful number, since it uses less digits than its factorization.

551466302440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801201 (or 1801197 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 551466302440 its reverse (44203664155), we get a palindrome (595669966595).

The spelling of 551466302440 in words is "five hundred fifty-one billion, four hundred sixty-six million, three hundred two thousand, four hundred forty".