2001132645616 has 40 divisors (see below), whose sum is σ = 4178168159984. Its totient is φ = 922996270080.

The previous prime is 2001132645593. The next prime is 2001132645643. The reversal of 2001132645616 is 6165462311002.

It is a congruent number.

It is an unprimeable number.

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, 2823561 + ... + 3460456.

Almost surely, 2^{2001132645616} is an apocalyptic number.

2001132645616 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2001132645616 is an abundant number, since it is smaller than the sum of its proper divisors (2177035514368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001132645616 is a wasteful number, since it uses less digits than its factorization.

2001132645616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6285569 (or 6285563 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

Adding to 2001132645616 its reverse (6165462311002), we get a palindrome (8166594956618).

The spelling of 2001132645616 in words is "two trillion, one billion, one hundred thirty-two million, six hundred forty-five thousand, six hundred sixteen".