1100055561100 has 18 divisors (see below), whose sum is σ = 2387120567804. Its totient is φ = 440022224400.

The previous prime is 1100055561089. The next prime is 1100055561113. The reversal of 1100055561100 is 11655500011.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5500277706 + ... + 5500277905.

Almost surely, 2^{1100055561100} is an apocalyptic number.

1100055561100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100055561100 is an abundant number, since it is smaller than the sum of its proper divisors (1287065006704).

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

1100055561100 is a wasteful number, since it uses less digits than its factorization.

1100055561100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11000555625 (or 11000555618 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 1100055561100 in words is "one trillion, one hundred billion, fifty-five million, five hundred sixty-one thousand, one hundred".