10840705978 has 8 divisors (see below), whose sum is σ = 16332694272. Its totient is φ = 5396474556.

The previous prime is 10840705871. The next prime is 10840705991. The reversal of 10840705978 is 87950704801.

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

It is a super-2 number, since 2×10840705978² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11938650 + ... + 11939557.

It is an arithmetic number, because the mean of its divisors is an integer number (2041586784).

Almost surely, 2^10840705978 is an apocalyptic number.

10840705978 is a deficient number, since it is larger than the sum of its proper divisors (5491988294).

10840705978 is a wasteful number, since it uses less digits than its factorization.

10840705978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23878436.

The product of its (nonzero) digits is 564480, while the sum is 49.

The spelling of 10840705978 in words is "ten billion, eight hundred forty million, seven hundred five thousand, nine hundred seventy-eight".