10109845978 has 8 divisors (see below), whose sum is σ = 15167695860. Its totient is φ = 5053947360.

The previous prime is 10109845973. The next prime is 10109845981. The reversal of 10109845978 is 87954890101.

It can be written as a sum of positive squares in 2 ways, for example, as 5895629089 + 4214216889 = 76783^2 + 64917^2 .

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

It is not an unprimeable number, because it can be changed into a prime (10109845973) 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, 474793 + ... + 495628.

Almost surely, 2^10109845978 is an apocalyptic number.

10109845978 is a deficient number, since it is larger than the sum of its proper divisors (5057849882).

10109845978 is an equidigital number, since it uses as much as digits as its factorization.

10109845978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975632.

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 10109845978 in words is "ten billion, one hundred nine million, eight hundred forty-five thousand, nine hundred seventy-eight".