10421566738 has 32 divisors (see below), whose sum is σ = 17166219840. Its totient is φ = 4705834560.

The previous prime is 10421566733. The next prime is 10421566741. The reversal of 10421566738 is 83766512401.

10421566738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 10421566694 and 10421566703.

It is not an unprimeable number, because it can be changed into a prime (10421566733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3695493 + ... + 3698311.

It is an arithmetic number, because the mean of its divisors is an integer number (536444370).

Almost surely, 2^10421566738 is an apocalyptic number.

10421566738 is a deficient number, since it is larger than the sum of its proper divisors (6744653102).

10421566738 is a wasteful number, since it uses less digits than its factorization.

10421566738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3882.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 10421566738 in words is "ten billion, four hundred twenty-one million, five hundred sixty-six thousand, seven hundred thirty-eight".