10421249623 has 2 divisors, whose sum is σ = 10421249624. Its totient is φ = 10421249622.

The previous prime is 10421249621. The next prime is 10421249627. The reversal of 10421249623 is 32694212401.

It is a weak prime.

It is an emirp because it is prime and its reverse (32694212401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10421249623 - 2¹ = 10421249621 is a prime.

Together with 10421249621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10421249621) 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 as a sum of consecutive naturals, namely, 5210624811 + 5210624812.

It is an arithmetic number, because the mean of its divisors is an integer number (5210624812).

Almost surely, 2^10421249623 is an apocalyptic number.

10421249623 is a deficient number, since it is larger than the sum of its proper divisors (1).

10421249623 is an equidigital number, since it uses as much as digits as its factorization.

10421249623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 10421249623 in words is "ten billion, four hundred twenty-one million, two hundred forty-nine thousand, six hundred twenty-three".