55011106511 has 4 divisors (see below), whose sum is σ = 55012597872. Its totient is φ = 55009615152.

The previous prime is 55011106487. The next prime is 55011106603. The reversal of 55011106511 is 11560111055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55011106511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55011196511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688910 + ... + 764603.

It is an arithmetic number, because the mean of its divisors is an integer number (13753149468).

Almost surely, 2^55011106511 is an apocalyptic number.

55011106511 is a deficient number, since it is larger than the sum of its proper divisors (1491361).

55011106511 is a wasteful number, since it uses less digits than its factorization.

55011106511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491360.

The product of its (nonzero) digits is 750, while the sum is 26.

Adding to 55011106511 its reverse (11560111055), we get a palindrome (66571217566).

The spelling of 55011106511 in words is "fifty-five billion, eleven million, one hundred six thousand, five hundred eleven".