2643652433623 has 2 divisors, whose sum is σ = 2643652433624. Its totient is φ = 2643652433622.

The previous prime is 2643652433621. The next prime is 2643652433633. The reversal of 2643652433623 is 3263342563462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2643652433623 - 2¹ = 2643652433621 is a prime.

It is a super-2 number, since 2×2643652433623² (a number of 26 digits) contains 22 as substring.

Together with 2643652433621, 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 (2643652433621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321826216811 + 1321826216812.

It is an arithmetic number, because the mean of its divisors is an integer number (1321826216812).

Almost surely, 2^{2643652433623} is an apocalyptic number.

2643652433623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643652433623 is an equidigital number, since it uses as much as digits as its factorization.

2643652433623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 49.

The spelling of 2643652433623 in words is "two trillion, six hundred forty-three billion, six hundred fifty-two million, four hundred thirty-three thousand, six hundred twenty-three".