10194021959656 has 64 divisors (see below), whose sum is σ = 21567371143680. Its totient is φ = 4490983326720.

The previous prime is 10194021959651. The next prime is 10194021959683. The reversal of 10194021959656 is 65695912049101.

It is a self number, because there is not a number n which added to its sum of digits gives 10194021959656.

It is not an unprimeable number, because it can be changed into a prime (10194021959651) by changing a digit.

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, 34522755 + ... + 34816786.

It is an arithmetic number, because the mean of its divisors is an integer number (336990174120).

Almost surely, 2^{10194021959656} is an apocalyptic number.

It is an amenable number.

10194021959656 is an abundant number, since it is smaller than the sum of its proper divisors (11373349184024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10194021959656 is a wasteful number, since it uses less digits than its factorization.

10194021959656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69339634 (or 69339630 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 58.

The spelling of 10194021959656 in words is "ten trillion, one hundred ninety-four billion, twenty-one million, nine hundred fifty-nine thousand, six hundred fifty-six".