11643051630 has 128 divisors (see below), whose sum is σ = 34319158272. Its totient is φ = 2467289088.

The previous prime is 11643051611. The next prime is 11643051659. The reversal of 11643051630 is 3615034611.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 214852 + ... + 263528.

It is an arithmetic number, because the mean of its divisors is an integer number (268118424).

Almost surely, 2^11643051630 is an apocalyptic number.

11643051630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11643051630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17159579136).

11643051630 is an abundant number, since it is smaller than the sum of its proper divisors (22676106642).

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

11643051630 is a wasteful number, since it uses less digits than its factorization.

11643051630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48778.

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 11643051630 in words is "eleven billion, six hundred forty-three million, fifty-one thousand, six hundred thirty".