1111552405100 has 72 divisors (see below), whose sum is σ = 2425344768000. Its totient is φ = 442175022400.

The previous prime is 1111552405039. The next prime is 1111552405147. The reversal of 1111552405100 is 15042551111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111552405100.

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, 120306281 + ... + 120315519.

It is an arithmetic number, because the mean of its divisors is an integer number (33685344000).

Almost surely, 2^{1111552405100} is an apocalyptic number.

1111552405100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111552405100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1212672384000).

1111552405100 is an abundant number, since it is smaller than the sum of its proper divisors (1313792362900).

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

1111552405100 is a wasteful number, since it uses less digits than its factorization.

1111552405100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15743 (or 15736 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 26.

Adding to 1111552405100 its reverse (15042551111), we get a palindrome (1126594956211).

The spelling of 1111552405100 in words is "one trillion, one hundred eleven billion, five hundred fifty-two million, four hundred five thousand, one hundred".