55111210305440 has 96 divisors (see below), whose sum is σ = 138655946091600. Its totient is φ = 20627820396544.

The previous prime is 55111210305433. The next prime is 55111210305451. The reversal of 55111210305440 is 4450301211155.

It can be written as a sum of positive squares in 8 ways, for example, as 40590507460624 + 14520702844816 = 6371068^2 + 3810604^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 55111210305397 and 55111210305406.

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, 58088615 + ... + 59029734.

Almost surely, 2^{55111210305440} is an apocalyptic number.

It is an amenable number.

55111210305440 is an abundant number, since it is smaller than the sum of its proper divisors (83544735786160).

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

55111210305440 is a wasteful number, since it uses less digits than its factorization.

55111210305440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117118554 (or 117118546 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 55111210305440 its reverse (4450301211155), we get a palindrome (59561511516595).

The spelling of 55111210305440 in words is "fifty-five trillion, one hundred eleven billion, two hundred ten million, three hundred five thousand, four hundred forty".