1642232065331 has 64 divisors (see below), whose sum is σ = 1985418086400. Its totient is φ = 1346481676800.

The previous prime is 1642232065291. The next prime is 1642232065339. The reversal of 1642232065331 is 1335602322461.

It is not a de Polignac number, because 1642232065331 - 2¹⁰ = 1642232064307 is a prime.

It is a super-2 number, since 2×1642232065331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1642232065339) 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 63 ways as a sum of consecutive naturals, for example, 1102908635 + ... + 1102910123.

It is an arithmetic number, because the mean of its divisors is an integer number (31022157600).

Almost surely, 2^{1642232065331} is an apocalyptic number.

1642232065331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1642232065331 is a deficient number, since it is larger than the sum of its proper divisors (343186021069).

1642232065331 is a wasteful number, since it uses less digits than its factorization.

1642232065331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557 (or 2531 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

Adding to 1642232065331 its reverse (1335602322461), we get a palindrome (2977834387792).

The spelling of 1642232065331 in words is "one trillion, six hundred forty-two billion, two hundred thirty-two million, sixty-five thousand, three hundred thirty-one".