10921916878 has 8 divisors (see below), whose sum is σ = 16383972240. Its totient is φ = 5460592800.

The previous prime is 10921916833. The next prime is 10921916879. The reversal of 10921916878 is 87861912901.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10921916879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143818 + ... + 206221.

It is an arithmetic number, because the mean of its divisors is an integer number (2047996530).

Almost surely, 2^10921916878 is an apocalyptic number.

10921916878 is a deficient number, since it is larger than the sum of its proper divisors (5462055362).

10921916878 is a wasteful number, since it uses less digits than its factorization.

10921916878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365642.

The product of its (nonzero) digits is 435456, while the sum is 52.

The spelling of 10921916878 in words is "ten billion, nine hundred twenty-one million, nine hundred sixteen thousand, eight hundred seventy-eight".