10921777894 has 8 divisors (see below), whose sum is σ = 16464992400. Its totient is φ = 5433447096.

The previous prime is 10921777871. The next prime is 10921777903. The reversal of 10921777894 is 49877712901.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13720429 + ... + 13721224.

It is an arithmetic number, because the mean of its divisors is an integer number (2058124050).

Almost surely, 2^10921777894 is an apocalyptic number.

10921777894 is a deficient number, since it is larger than the sum of its proper divisors (5543214506).

10921777894 is a wasteful number, since it uses less digits than its factorization.

10921777894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27441854.

The product of its (nonzero) digits is 1778112, while the sum is 55.

The spelling of 10921777894 in words is "ten billion, nine hundred twenty-one million, seven hundred seventy-seven thousand, eight hundred ninety-four".