55540410040 has 32 divisors (see below), whose sum is σ = 124981012080. Its totient is φ = 22213481472.

The previous prime is 55540410019. The next prime is 55540410043. The reversal of 55540410040 is 4001404555.

It is a super-2 number, since 2×55540410040² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55540409990 and 55540410008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55540410043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270019 + ... + 428941.

Almost surely, 2^55540410040 is an apocalyptic number.

It is an amenable number.

55540410040 is an abundant number, since it is smaller than the sum of its proper divisors (69440602040).

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

55540410040 is a wasteful number, since it uses less digits than its factorization.

55540410040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167671 (or 167667 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

Adding to 55540410040 its reverse (4001404555), we get a palindrome (59541814595).

The spelling of 55540410040 in words is "fifty-five billion, five hundred forty million, four hundred ten thousand, forty".