505600040120 has 64 divisors (see below), whose sum is σ = 1356641118720. Its totient is φ = 165811688064.

The previous prime is 505600040117. The next prime is 505600040123. The reversal of 505600040120 is 21040006505.

It is an interprime number because it is at equal distance from previous prime (505600040117) and next prime (505600040123).

It is a super-2 number, since 2×505600040120² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505600040123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39248222 + ... + 39261101.

It is an arithmetic number, because the mean of its divisors is an integer number (21197517480).

Almost surely, 2^505600040120 is an apocalyptic number.

It is an amenable number.

505600040120 is an abundant number, since it is smaller than the sum of its proper divisors (851041078600).

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

505600040120 is a wasteful number, since it uses less digits than its factorization.

505600040120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78509364 (or 78509360 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 505600040120 its reverse (21040006505), we get a palindrome (526640046625).

The spelling of 505600040120 in words is "five hundred five billion, six hundred million, forty thousand, one hundred twenty".