10993821144 has 32 divisors (see below), whose sum is σ = 27741424320. Its totient is φ = 3630357536.

The previous prime is 10993821133. The next prime is 10993821193. The reversal of 10993821144 is 44112839901.

It is a super-2 number, since 2×10993821144² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10993821096 and 10993821105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2137974 + ... + 2143109.

It is an arithmetic number, because the mean of its divisors is an integer number (866919510).

Almost surely, 2^10993821144 is an apocalyptic number.

It is an amenable number.

10993821144 is an abundant number, since it is smaller than the sum of its proper divisors (16747603176).

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

10993821144 is a wasteful number, since it uses less digits than its factorization.

10993821144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281199 (or 4281195 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 10993821144 in words is "ten billion, nine hundred ninety-three million, eight hundred twenty-one thousand, one hundred forty-four".