2001591441892 has 48 divisors (see below), whose sum is σ = 4146220512000. Its totient is φ = 827245367424.

The previous prime is 2001591441887. The next prime is 2001591441893. The reversal of 2001591441892 is 2981441951002.

It is a super-2 number, since 2×2001591441892² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2001591441893) 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 15 ways as a sum of consecutive naturals, for example, 813592 + ... + 2159887.

It is an arithmetic number, because the mean of its divisors is an integer number (86379594000).

Almost surely, 2^{2001591441892} is an apocalyptic number.

It is an amenable number.

2001591441892 is an abundant number, since it is smaller than the sum of its proper divisors (2144629070108).

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

2001591441892 is a wasteful number, since it uses less digits than its factorization.

2001591441892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974348 (or 2974346 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 2001591441892 in words is "two trillion, one billion, five hundred ninety-one million, four hundred forty-one thousand, eight hundred ninety-two".