1466501561989 has 8 divisors (see below), whose sum is σ = 1486614084480. Its totient is φ = 1446389673696.

The previous prime is 1466501561947. The next prime is 1466501561999. The reversal of 1466501561989 is 9891651056641.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1466501561989 is a prime.

It is a super-2 number, since 2×1466501561989² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1466501561999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6275604 + ... + 6505090.

It is an arithmetic number, because the mean of its divisors is an integer number (185826760560).

Almost surely, 2^{1466501561989} is an apocalyptic number.

It is an amenable number.

1466501561989 is a deficient number, since it is larger than the sum of its proper divisors (20112522491).

1466501561989 is an equidigital number, since it uses as much as digits as its factorization.

1466501561989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317099.

The product of its (nonzero) digits is 13996800, while the sum is 61.

The spelling of 1466501561989 in words is "one trillion, four hundred sixty-six billion, five hundred one million, five hundred sixty-one thousand, nine hundred eighty-nine".