504545555440 has 160 divisors (see below), whose sum is σ = 1296788714496. Its totient is φ = 181588070400.

The previous prime is 504545555419. The next prime is 504545555441. The reversal of 504545555440 is 44555545405.

It is a super-2 number, since 2×504545555440² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504545555441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79792119 + ... + 79798441.

Almost surely, 2^504545555440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 504545555440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (648394357248).

504545555440 is an abundant number, since it is smaller than the sum of its proper divisors (792243159056).

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

504545555440 is a wasteful number, since it uses less digits than its factorization.

504545555440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8927 (or 8921 counting only the distinct ones).

The product of its (nonzero) digits is 4000000, while the sum is 46.

The spelling of 504545555440 in words is "five hundred four billion, five hundred forty-five million, five hundred fifty-five thousand, four hundred forty".