555165232440 has 256 divisors, whose sum is σ = 2157728025600. Its totient is φ = 110968786944.

The previous prime is 555165232429. The next prime is 555165232463. The reversal of 555165232440 is 44232561555.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 555165232392 and 555165232401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1130397 + ... + 1545356.

It is an arithmetic number, because the mean of its divisors is an integer number (8428625100).

Almost surely, 2^555165232440 is an apocalyptic number.

It is an amenable number.

555165232440 is an abundant number, since it is smaller than the sum of its proper divisors (1602562793160).

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

555165232440 is a wasteful number, since it uses less digits than its factorization.

555165232440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2675806 (or 2675802 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 42.

Adding to 555165232440 its reverse (44232561555), we get a palindrome (599397793995).

The spelling of 555165232440 in words is "five hundred fifty-five billion, one hundred sixty-five million, two hundred thirty-two thousand, four hundred forty".