2442664521651 has 4 divisors (see below), whose sum is σ = 3256886028872. Its totient is φ = 1628443014432.

The previous prime is 2442664521643. The next prime is 2442664521691. The reversal of 2442664521651 is 1561254662442.

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

It is not a de Polignac number, because 2442664521651 - 2³ = 2442664521643 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 2442664521651.

It is not an unprimeable number, because it can be changed into a prime (2442664521631) 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, 407110753606 + ... + 407110753611.

It is an arithmetic number, because the mean of its divisors is an integer number (814221507218).

Almost surely, 2^{2442664521651} is an apocalyptic number.

2442664521651 is a deficient number, since it is larger than the sum of its proper divisors (814221507221).

2442664521651 is an equidigital number, since it uses as much as digits as its factorization.

2442664521651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814221507220.

The product of its digits is 2764800, while the sum is 48.

The spelling of 2442664521651 in words is "two trillion, four hundred forty-two billion, six hundred sixty-four million, five hundred twenty-one thousand, six hundred fifty-one".