11021634887 has 8 divisors (see below), whose sum is σ = 11062973856. Its totient is φ = 10980359712.

The previous prime is 11021634881. The next prime is 11021634907. The reversal of 11021634887 is 78843612011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11021634887 - 2²⁴ = 11004857671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021634881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345413 + ... + 375969.

It is an arithmetic number, because the mean of its divisors is an integer number (1382871732).

Almost surely, 2^11021634887 is an apocalyptic number.

11021634887 is a deficient number, since it is larger than the sum of its proper divisors (41338969).

11021634887 is an equidigital number, since it uses as much as digits as its factorization.

11021634887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31897.

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 11021634887 in words is "eleven billion, twenty-one million, six hundred thirty-four thousand, eight hundred eighty-seven".