1466120229891 has 8 divisors (see below), whose sum is σ = 1991710501200. Its totient is φ = 958971722592.

The previous prime is 1466120229881. The next prime is 1466120229901. The reversal of 1466120229891 is 1989220216641.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1466120229881) and next prime (1466120229901).

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

It is not a de Polignac number, because 1466120229891 - 2¹⁸ = 1466119967747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1466120229881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4610440816 + ... + 4610441133.

It is an arithmetic number, because the mean of its divisors is an integer number (248963812650).

Almost surely, 2^{1466120229891} is an apocalyptic number.

1466120229891 is a deficient number, since it is larger than the sum of its proper divisors (525590271309).

1466120229891 is an equidigital number, since it uses as much as digits as its factorization.

1466120229891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9220882005.

The product of its (nonzero) digits is 746496, while the sum is 51.

The spelling of 1466120229891 in words is "one trillion, four hundred sixty-six billion, one hundred twenty million, two hundred twenty-nine thousand, eight hundred ninety-one".