1155110156550 has 96 divisors (see below), whose sum is σ = 3637680268800. Its totient is φ = 264025176480.

The previous prime is 1155110156531. The next prime is 1155110156587. The reversal of 1155110156550 is 556510115511.

1155110156550 is a `hidden beast` number, since 1 + 1 + 5 + 51 + 1 + 0 + 1 + 56 + 550 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61107490 + ... + 61126389.

It is an arithmetic number, because the mean of its divisors is an integer number (37892502800).

Almost surely, 2^{1155110156550} is an apocalyptic number.

1155110156550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155110156550 is an abundant number, since it is smaller than the sum of its proper divisors (2482570112250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155110156550 is a wasteful number, since it uses less digits than its factorization.

1155110156550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122233907 (or 122233896 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 36.

The spelling of 1155110156550 in words is "one trillion, one hundred fifty-five billion, one hundred ten million, one hundred fifty-six thousand, five hundred fifty".