644012465111041 has 8 divisors (see below), whose sum is σ = 708308308600704. Its totient is φ = 581824682063760.

The previous prime is 644012465110967. The next prime is 644012465111083. The reversal of 644012465111041 is 140111564210446.

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 644012465111041 - 2²⁵ = 644012431556609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 644012465110985 and 644012465111003.

It is not an unprimeable number, because it can be changed into a prime (644012465121041) 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, 527015109955 + ... + 527015111176.

It is an arithmetic number, because the mean of its divisors is an integer number (88538538575088).

Almost surely, 2^{644012465111041} is an apocalyptic number.

It is an amenable number.

644012465111041 is a deficient number, since it is larger than the sum of its proper divisors (64295843489663).

644012465111041 is a wasteful number, since it uses less digits than its factorization.

644012465111041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054030221191.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 644012465111041 in words is "six hundred forty-four trillion, twelve billion, four hundred sixty-five million, one hundred eleven thousand, forty-one".