55440010213 has 16 divisors (see below), whose sum is σ = 64349910144. Its totient is φ = 46778561280.

The previous prime is 55440010193. The next prime is 55440010217. The reversal of 55440010213 is 31201004455.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55440010213 - 2²⁹ = 54903139301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55440010217) 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, 654681 + ... + 734497.

It is an arithmetic number, because the mean of its divisors is an integer number (4021869384).

Almost surely, 2^55440010213 is an apocalyptic number.

It is an amenable number.

55440010213 is a deficient number, since it is larger than the sum of its proper divisors (8909899931).

55440010213 is a wasteful number, since it uses less digits than its factorization.

55440010213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81372.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 55440010213 its reverse (31201004455), we get a palindrome (86641014668).

The spelling of 55440010213 in words is "fifty-five billion, four hundred forty million, ten thousand, two hundred thirteen".