2044256812921 has 8 divisors (see below), whose sum is σ = 2099861449920. Its totient is φ = 1988670831408.

The previous prime is 2044256812907. The next prime is 2044256812943. The reversal of 2044256812921 is 1292186524402.

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 2044256812921 - 2¹⁷ = 2044256681849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2044251812921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4441591 + ... + 4880188.

It is an arithmetic number, because the mean of its divisors is an integer number (262482681240).

Almost surely, 2^{2044256812921} is an apocalyptic number.

It is an amenable number.

2044256812921 is a deficient number, since it is larger than the sum of its proper divisors (55604636999).

2044256812921 is an equidigital number, since it uses as much as digits as its factorization.

2044256812921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9327743.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 2044256812921 in words is "two trillion, forty-four billion, two hundred fifty-six million, eight hundred twelve thousand, nine hundred twenty-one".