1662531261311 has 8 divisors (see below), whose sum is σ = 1682536809360. Its totient is φ = 1642612131072.

The previous prime is 1662531261203. The next prime is 1662531261353. The reversal of 1662531261311 is 1131621352661.

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-1662531261311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662531281311) 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, 21565745 + ... + 21642698.

It is an arithmetic number, because the mean of its divisors is an integer number (210317101170).

Almost surely, 2^{1662531261311} is an apocalyptic number.

1662531261311 is a deficient number, since it is larger than the sum of its proper divisors (20005548049).

1662531261311 is a wasteful number, since it uses less digits than its factorization.

1662531261311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43208905.

The product of its digits is 38880, while the sum is 38.

The spelling of 1662531261311 in words is "one trillion, six hundred sixty-two billion, five hundred thirty-one million, two hundred sixty-one thousand, three hundred eleven".