10021866878326 has 32 divisors (see below), whose sum is σ = 16510814547840. Its totient is φ = 4541138359296.

The previous prime is 10021866878299. The next prime is 10021866878339. The reversal of 10021866878326 is 62387866812001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13485775 + ... + 14209498.

It is an arithmetic number, because the mean of its divisors is an integer number (515962954620).

Almost surely, 2^{10021866878326} is an apocalyptic number.

10021866878326 is a deficient number, since it is larger than the sum of its proper divisors (6488947669514).

10021866878326 is a wasteful number, since it uses less digits than its factorization.

10021866878326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27695688.

The product of its (nonzero) digits is 9289728, while the sum is 58.

The spelling of 10021866878326 in words is "ten trillion, twenty-one billion, eight hundred sixty-six million, eight hundred seventy-eight thousand, three hundred twenty-six".