55006516511 has 4 divisors (see below), whose sum is σ = 55137797400. Its totient is φ = 54875235624.

The previous prime is 55006516507. The next prime is 55006516549. The reversal of 55006516511 is 11561560055.

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

It is a cyclic number.

It is not a de Polignac number, because 55006516511 - 2² = 55006516507 is a prime.

It is a super-2 number, since 2×55006516511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55006516211) 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, 65639816 + ... + 65640653.

It is an arithmetic number, because the mean of its divisors is an integer number (13784449350).

Almost surely, 2^55006516511 is an apocalyptic number.

55006516511 is a deficient number, since it is larger than the sum of its proper divisors (131280889).

55006516511 is a wasteful number, since it uses less digits than its factorization.

55006516511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131280888.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 55006516511 in words is "fifty-five billion, six million, five hundred sixteen thousand, five hundred eleven".