55513316205240 has 128 divisors (see below), whose sum is σ = 168564474005760. Its totient is φ = 14624151220224.

The previous prime is 55513316205227. The next prime is 55513316205241. The reversal of 55513316205240 is 4250261331555.

It is a super-2 number, since 2×55513316205240² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55513316205192 and 55513316205201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55513316205241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2007679 + ... + 10726481.

It is an arithmetic number, because the mean of its divisors is an integer number (1316909953170).

Almost surely, 2^{55513316205240} 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 55513316205240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84282237002880).

55513316205240 is an abundant number, since it is smaller than the sum of its proper divisors (113051157800520).

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

55513316205240 is a wasteful number, since it uses less digits than its factorization.

55513316205240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8719461 (or 8719457 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 42.

Adding to 55513316205240 its reverse (4250261331555), we get a palindrome (59763577536795).

The spelling of 55513316205240 in words is "fifty-five trillion, five hundred thirteen billion, three hundred sixteen million, two hundred five thousand, two hundred forty".