2643162023251 has 4 divisors (see below), whose sum is σ = 2643203831472. Its totient is φ = 2643120215032.

The previous prime is 2643162023237. The next prime is 2643162023269. The reversal of 2643162023251 is 1523202613462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2643162023251 - 2⁵ = 2643162023219 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 2643162023251.

It is not an unprimeable number, because it can be changed into a prime (2643162093251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20809135 + ... + 20935768.

It is an arithmetic number, because the mean of its divisors is an integer number (660800957868).

Almost surely, 2^{2643162023251} is an apocalyptic number.

2643162023251 is a deficient number, since it is larger than the sum of its proper divisors (41808221).

2643162023251 is an equidigital number, since it uses as much as digits as its factorization.

2643162023251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41808220.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 2643162023251 in words is "two trillion, six hundred forty-three billion, one hundred sixty-two million, twenty-three thousand, two hundred fifty-one".