1123555111050 has 48 divisors (see below), whose sum is σ = 2786815819872. Its totient is φ = 299571777600.

The previous prime is 1123555111027. The next prime is 1123555111069. The reversal of 1123555111050 is 501115553211.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1123555110999 and 1123555111017.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 521080 + ... + 1587020.

It is an arithmetic number, because the mean of its divisors is an integer number (58058662914).

Almost surely, 2^{1123555111050} is an apocalyptic number.

1123555111050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1123555111050 is an abundant number, since it is smaller than the sum of its proper divisors (1663260708822).

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

1123555111050 is a wasteful number, since it uses less digits than its factorization.

1123555111050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072983 (or 1072978 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 30.

The spelling of 1123555111050 in words is "one trillion, one hundred twenty-three billion, five hundred fifty-five million, one hundred eleven thousand, fifty".