2646421423 has 12 divisors (see below), whose sum is σ = 2855745088. Its totient is φ = 2449687680.

The previous prime is 2646421397. The next prime is 2646421429. The reversal of 2646421423 is 3241246462.

It is not a de Polignac number, because 2646421423 - 2⁹ = 2646420911 is a prime.

It is a super-2 number, since 2×2646421423² = 14007092696226689858, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646421429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64290 + ... + 97087.

Almost surely, 2^2646421423 is an apocalyptic number.

2646421423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2646421423 is a deficient number, since it is larger than the sum of its proper divisors (209323665).

2646421423 is a wasteful number, since it uses less digits than its factorization.

2646421423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161454 (or 161431 counting only the distinct ones).

The product of its digits is 55296, while the sum is 34.

The square root of 2646421423 is about 51443.3807501023. The cubic root of 2646421423 is about 1383.2043131940.

Adding to 2646421423 its reverse (3241246462), we get a palindrome (5887667885).

The spelling of 2646421423 in words is "two billion, six hundred forty-six million, four hundred twenty-one thousand, four hundred twenty-three".