1661462455873 has 8 divisors (see below), whose sum is σ = 1821895714656. Its totient is φ = 1502594400000.

The previous prime is 1661462455871. The next prime is 1661462455879. The reversal of 1661462455873 is 3785542641661.

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 1661462455873 - 2¹ = 1661462455871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1661462455871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391298503 + ... + 391302748.

It is an arithmetic number, because the mean of its divisors is an integer number (227736964332).

Almost surely, 2^{1661462455873} is an apocalyptic number.

It is an amenable number.

1661462455873 is a deficient number, since it is larger than the sum of its proper divisors (160433258783).

1661462455873 is a wasteful number, since it uses less digits than its factorization.

1661462455873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782601455.

The product of its digits is 29030400, while the sum is 58.

The spelling of 1661462455873 in words is "one trillion, six hundred sixty-one billion, four hundred sixty-two million, four hundred fifty-five thousand, eight hundred seventy-three".