1181632440264 has 64 divisors (see below), whose sum is σ = 3058293628800. Its totient is φ = 380003344896.

The previous prime is 1181632440223. The next prime is 1181632440277. The reversal of 1181632440264 is 4620442361811.

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, 255412 + ... + 1558364.

It is an arithmetic number, because the mean of its divisors is an integer number (47785837950).

Almost surely, 2^{1181632440264} 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 1181632440264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1529146814400).

1181632440264 is an abundant number, since it is smaller than the sum of its proper divisors (1876661188536).

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

1181632440264 is a wasteful number, since it uses less digits than its factorization.

1181632440264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304294 (or 1304290 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 1181632440264 in words is "one trillion, one hundred eighty-one billion, six hundred thirty-two million, four hundred forty thousand, two hundred sixty-four".