55111262610 has 64 divisors (see below), whose sum is σ = 135450703872. Its totient is φ = 14343139776.

The previous prime is 55111262597. The next prime is 55111262629. The reversal of 55111262610 is 1626211155.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1669687 + ... + 1702373.

It is an arithmetic number, because the mean of its divisors is an integer number (2116417248).

Almost surely, 2^55111262610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55111262610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67725351936).

55111262610 is an abundant number, since it is smaller than the sum of its proper divisors (80339441262).

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

55111262610 is a wasteful number, since it uses less digits than its factorization.

55111262610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34047.

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 55111262610 its reverse (1626211155), we get a palindrome (56737473765).

The spelling of 55111262610 in words is "fifty-five billion, one hundred eleven million, two hundred sixty-two thousand, six hundred ten".