55015343240 has 128 divisors (see below), whose sum is σ = 148972763520. Its totient is φ = 18016204800.

The previous prime is 55015343213. The next prime is 55015343261. The reversal of 55015343240 is 4234351055.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55015343197 and 55015343206.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117227 + ... + 351813.

It is an arithmetic number, because the mean of its divisors is an integer number (1163849715).

Almost surely, 2^55015343240 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 55015343240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74486381760).

55015343240 is an abundant number, since it is smaller than the sum of its proper divisors (93957420280).

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

55015343240 is a wasteful number, since it uses less digits than its factorization.

55015343240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234663 (or 234659 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 55015343240 its reverse (4234351055), we get a palindrome (59249694295).

The spelling of 55015343240 in words is "fifty-five billion, fifteen million, three hundred forty-three thousand, two hundred forty".