1181053435688 has 64 divisors (see below), whose sum is σ = 2585704896000. Its totient is φ = 495199111680.

The previous prime is 1181053435669. The next prime is 1181053435697. The reversal of 1181053435688 is 8865343501811.

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, 6620948 + ... + 6796988.

It is an arithmetic number, because the mean of its divisors is an integer number (40401639000).

Almost surely, 2^{1181053435688} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1181053435688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1292852448000).

1181053435688 is an abundant number, since it is smaller than the sum of its proper divisors (1404651460312).

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

1181053435688 is a wasteful number, since it uses less digits than its factorization.

1181053435688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178650 (or 178646 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 53.

The spelling of 1181053435688 in words is "one trillion, one hundred eighty-one billion, fifty-three million, four hundred thirty-five thousand, six hundred eighty-eight".