11855455002 has 80 divisors (see below), whose sum is σ = 28184853312. Its totient is φ = 3711795840.

The previous prime is 11855454959. The next prime is 11855455013. The reversal of 11855455002 is 20055455811.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1436227 + ... + 1444457.

Almost surely, 2^11855455002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11855455002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14092426656).

11855455002 is an abundant number, since it is smaller than the sum of its proper divisors (16329398310).

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

11855455002 is a wasteful number, since it uses less digits than its factorization.

11855455002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8785 (or 8776 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 36.

The spelling of 11855455002 in words is "eleven billion, eight hundred fifty-five million, four hundred fifty-five thousand, two".