10421823746 has 4 divisors (see below), whose sum is σ = 15632735622. Its totient is φ = 5210911872.

The previous prime is 10421823739. The next prime is 10421823749. The reversal of 10421823746 is 64732812401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64732812401 = 251 ⋅257899651.

It can be written as a sum of positive squares in only one way, i.e., 9634404025 + 787419721 = 98155^2 + 28061^2 .

It is a super-2 number, since 2×10421823746² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10421823749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2605455935 + ... + 2605455938.

Almost surely, 2^10421823746 is an apocalyptic number.

10421823746 is a deficient number, since it is larger than the sum of its proper divisors (5210911876).

10421823746 is an equidigital number, since it uses as much as digits as its factorization.

10421823746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5210911875.

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 10421823746 in words is "ten billion, four hundred twenty-one million, eight hundred twenty-three thousand, seven hundred forty-six".