1111555515055 has 16 divisors (see below), whose sum is σ = 1404096311520. Its totient is φ = 842426362368.

The previous prime is 1111555515047. The next prime is 1111555515101. The reversal of 1111555515055 is 5505155551111.

It is a cyclic number.

It is not a de Polignac number, because 1111555515055 - 2³ = 1111555515047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111555514999 and 1111555515017.

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, 8943619 + ... + 9067051.

It is an arithmetic number, because the mean of its divisors is an integer number (87756019470).

Almost surely, 2^{1111555515055} is an apocalyptic number.

1111555515055 is a deficient number, since it is larger than the sum of its proper divisors (292540796465).

1111555515055 is a wasteful number, since it uses less digits than its factorization.

1111555515055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218250.

The product of its (nonzero) digits is 78125, while the sum is 40.

The spelling of 1111555515055 in words is "one trillion, one hundred eleven billion, five hundred fifty-five million, five hundred fifteen thousand, fifty-five".