55365031240 has 64 divisors (see below), whose sum is σ = 127155096000. Its totient is φ = 21689475840.

The previous prime is 55365031207. The next prime is 55365031307. The reversal of 55365031240 is 4213056355.

It is a junction number, because it is equal to n+sod(n) for n = 55365031196 and 55365031205.

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, 591235 + ... + 678445.

It is an arithmetic number, because the mean of its divisors is an integer number (1986798375).

Almost surely, 2^55365031240 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 55365031240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63577548000).

55365031240 is an abundant number, since it is smaller than the sum of its proper divisors (71790064760).

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

55365031240 is a wasteful number, since it uses less digits than its factorization.

55365031240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87550 (or 87546 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 55365031240 its reverse (4213056355), we get a palindrome (59578087595).

The spelling of 55365031240 in words is "fifty-five billion, three hundred sixty-five million, thirty-one thousand, two hundred forty".