7466489705221 has 8 divisors (see below), whose sum is σ = 7751442259800. Its totient is φ = 7183369643520.

The previous prime is 7466489705219. The next prime is 7466489705249. The reversal of 7466489705221 is 1225079846647.

It can be written as a sum of positive squares in 4 ways, for example, as 3715973314596 + 3750516390625 = 1927686^2 + 1936625^2 .

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 7466489705221 - 2¹ = 7466489705219 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7466489705221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7466489705921) 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, 458114916 + ... + 458131213.

It is an arithmetic number, because the mean of its divisors is an integer number (968930282475).

Almost surely, 2^{7466489705221} is an apocalyptic number.

It is an amenable number.

7466489705221 is a deficient number, since it is larger than the sum of its proper divisors (284952554579).

7466489705221 is a wasteful number, since it uses less digits than its factorization.

7466489705221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916246439.

The product of its (nonzero) digits is 40642560, while the sum is 61.

The spelling of 7466489705221 in words is "seven trillion, four hundred sixty-six billion, four hundred eighty-nine million, seven hundred five thousand, two hundred twenty-one".