5511110505551 has 16 divisors (see below), whose sum is σ = 6315322314240. Its totient is φ = 4711127430240.

The previous prime is 5511110505547. The next prime is 5511110505661. The reversal of 5511110505551 is 1555050111155.

It is not a de Polignac number, because 5511110505551 - 2² = 5511110505547 is a prime.

It is a super-3 number, since 3×5511110505551³ (a number of 39 digits) contains 333 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 (5511110505541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87403406 + ... + 87466436.

It is an arithmetic number, because the mean of its divisors is an integer number (394707644640).

Almost surely, 2^{5511110505551} is an apocalyptic number.

5511110505551 is a deficient number, since it is larger than the sum of its proper divisors (804211808689).

5511110505551 is a wasteful number, since it uses less digits than its factorization.

5511110505551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96374.

The product of its (nonzero) digits is 15625, while the sum is 35.

The spelling of 5511110505551 in words is "five trillion, five hundred eleven billion, one hundred ten million, five hundred five thousand, five hundred fifty-one".