55113442000 has 40 divisors (see below), whose sum is σ = 133264307592. Its totient is φ = 22045376000.

The previous prime is 55113441991. The next prime is 55113442001. The reversal of 55113442000 is 24431155.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 220700736 + 54892741264 = 14856^2 + 234292^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55113442001) 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, 13776361 + ... + 13780360.

Almost surely, 2^55113442000 is an apocalyptic number.

55113442000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55113442000 is an abundant number, since it is smaller than the sum of its proper divisors (78150865592).

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

55113442000 is a wasteful number, since it uses less digits than its factorization.

55113442000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27556744 (or 27556728 counting only the distinct ones).

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

Adding to 55113442000 its reverse (24431155), we get a palindrome (55137873155).

The spelling of 55113442000 in words is "fifty-five billion, one hundred thirteen million, four hundred forty-two thousand".