11129632836 has 72 divisors (see below), whose sum is σ = 30390163776. Its totient is φ = 3160825920.

The previous prime is 11129632823. The next prime is 11129632859. The reversal of 11129632836 is 63823692111.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 41526 + ... + 154866.

It is an arithmetic number, because the mean of its divisors is an integer number (422085608).

Almost surely, 2^11129632836 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 11129632836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15195081888).

11129632836 is an abundant number, since it is smaller than the sum of its proper divisors (19260530940).

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

11129632836 is a wasteful number, since it uses less digits than its factorization.

11129632836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113529 (or 113520 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The spelling of 11129632836 in words is "eleven billion, one hundred twenty-nine million, six hundred thirty-two thousand, eight hundred thirty-six".