244701426566021 has 4 divisors (see below), whose sum is σ = 244701553399212. Its totient is φ = 244701299732832.

The previous prime is 244701426565991. The next prime is 244701426566081. The reversal of 244701426566021 is 120665624107442.

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

It can be written as a sum of positive squares in 2 ways, for example, as 131050155825796 + 113651270740225 = 11447714^2 + 10660735^2 .

It is a cyclic number.

It is not a de Polignac number, because 244701426566021 - 2²⁶ = 244701359457157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244701426566081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60477206 + ... + 64396391.

It is an arithmetic number, because the mean of its divisors is an integer number (61175388349803).

Almost surely, 2^{244701426566021} is an apocalyptic number.

It is an amenable number.

244701426566021 is a deficient number, since it is larger than the sum of its proper divisors (126833191).

244701426566021 is a wasteful number, since it uses less digits than its factorization.

244701426566021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126833190.

The product of its (nonzero) digits is 3870720, while the sum is 50.

The spelling of 244701426566021 in words is "two hundred forty-four trillion, seven hundred one billion, four hundred twenty-six million, five hundred sixty-six thousand, twenty-one".