2644436034021 has 8 divisors (see below), whose sum is σ = 3647497978080. Its totient is φ = 1702165722992.

The previous prime is 2644436034001. The next prime is 2644436034029. The reversal of 2644436034021 is 1204306344462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2644436034021 - 2⁹ = 2644436033509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644436034029) 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 7 ways as a sum of consecutive naturals, for example, 15197908155 + ... + 15197908328.

It is an arithmetic number, because the mean of its divisors is an integer number (455937247260).

Almost surely, 2^{2644436034021} is an apocalyptic number.

It is an amenable number.

2644436034021 is a deficient number, since it is larger than the sum of its proper divisors (1003061944059).

2644436034021 is a wasteful number, since it uses less digits than its factorization.

2644436034021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30395816515.

The product of its (nonzero) digits is 331776, while the sum is 39.

The spelling of 2644436034021 in words is "two trillion, six hundred forty-four billion, four hundred thirty-six million, thirty-four thousand, twenty-one".