552445403440 has 80 divisors (see below), whose sum is σ = 1499158904832. Its totient is φ = 185379846912.

The previous prime is 552445403423. The next prime is 552445403507. The reversal of 552445403440 is 44304544255.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 552445403393 and 552445403402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10468464 + ... + 10521103.

Almost surely, 2^552445403440 is an apocalyptic number.

It is an amenable number.

552445403440 is an abundant number, since it is smaller than the sum of its proper divisors (946713501392).

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

552445403440 is a wasteful number, since it uses less digits than its factorization.

552445403440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20989634 (or 20989628 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 40.

Adding to 552445403440 its reverse (44304544255), we get a palindrome (596749947695).

The spelling of 552445403440 in words is "five hundred fifty-two billion, four hundred forty-five million, four hundred three thousand, four hundred forty".