43668981279001 has 9 divisors (see below), whose sum is σ = 47286623048031. Its totient is φ = 40309749573912.

The previous prime is 43668981278983. The next prime is 43668981279023. The reversal of 43668981279001 is 10097218986634.

The square root of 43668981279001 is 6608251.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6459908473225 + 37209072805776 = 2541635^2 + 6099924^2 .

It is not a de Polignac number, because 43668981279001 - 2⁵ = 43668981278969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43668981270001) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 85653100 + ... + 86161426.

It is an arithmetic number, because the mean of its divisors is an integer number (5254069227559).

Almost surely, 2^{43668981279001} is an apocalyptic number.

43668981279001 is the 6608251-st square number.

43668981279001 is the 3304126-th centered octagonal number.

It is an amenable number.

43668981279001 is a deficient number, since it is larger than the sum of its proper divisors (3617641769030).

43668981279001 is an frugal number, since it uses more digits than its factorization.

43668981279001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016680 (or 508340 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 64.

The spelling of 43668981279001 in words is "forty-three trillion, six hundred sixty-eight billion, nine hundred eighty-one million, two hundred seventy-nine thousand, one".