11115655455 has 16 divisors (see below), whose sum is σ = 17957721600. Its totient is φ = 5870791968.

The previous prime is 11115655423. The next prime is 11115655471. The reversal of 11115655455 is 55455651111.

It is not a de Polignac number, because 11115655455 - 2⁵ = 11115655423 is a prime.

It is a congruent number.

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, 3595755 + ... + 3598844.

It is an arithmetic number, because the mean of its divisors is an integer number (1122357600).

Almost surely, 2^11115655455 is an apocalyptic number.

11115655455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11115655455 is a deficient number, since it is larger than the sum of its proper divisors (6842066145).

11115655455 is a wasteful number, since it uses less digits than its factorization.

11115655455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7194710.

The product of its digits is 75000, while the sum is 39.

It can be divided in two parts, 1111 and 5655455, that added together give a triangular number (5656566 = T₃₃₆₃).

The spelling of 11115655455 in words is "eleven billion, one hundred fifteen million, six hundred fifty-five thousand, four hundred fifty-five".