1982549235511 has 16 divisors (see below), whose sum is σ = 2150799293664. Its totient is φ = 1816550659584.

The previous prime is 1982549235503. The next prime is 1982549235517. The reversal of 1982549235511 is 1155329452891.

It is a cyclic number.

It is not a de Polignac number, because 1982549235511 - 2³ = 1982549235503 is a prime.

It is a super-2 number, since 2×1982549235511² (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 (1982549235517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29436571 + ... + 29503843.

It is an arithmetic number, because the mean of its divisors is an integer number (134424955854).

Almost surely, 2^{1982549235511} is an apocalyptic number.

1982549235511 is a deficient number, since it is larger than the sum of its proper divisors (168250058153).

1982549235511 is a wasteful number, since it uses less digits than its factorization.

1982549235511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83970.

The product of its digits is 3888000, while the sum is 55.

The spelling of 1982549235511 in words is "one trillion, nine hundred eighty-two billion, five hundred forty-nine million, two hundred thirty-five thousand, five hundred eleven".