10126421643 has 16 divisors (see below), whose sum is σ = 14542309376. Its totient is φ = 6230869920.

The previous prime is 10126421639. The next prime is 10126421681. The reversal of 10126421643 is 34612462101.

10126421643 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10126421643 - 2² = 10126421639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10126421643.

It is not an unprimeable number, because it can be changed into a prime (10126421633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 593238 + ... + 610068.

It is an arithmetic number, because the mean of its divisors is an integer number (908894336).

Almost surely, 2^10126421643 is an apocalyptic number.

10126421643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

10126421643 is a deficient number, since it is larger than the sum of its proper divisors (4415887733).

10126421643 is a wasteful number, since it uses less digits than its factorization.

10126421643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32274.

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 10126421643 its reverse (34612462101), we get a palindrome (44738883744).

The spelling of 10126421643 in words is "ten billion, one hundred twenty-six million, four hundred twenty-one thousand, six hundred forty-three".