2191899267040 has 48 divisors (see below), whose sum is σ = 5918128024032. Its totient is φ = 751508319744.

The previous prime is 2191899266993. The next prime is 2191899267043. The reversal of 2191899267040 is 407629981912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191899267043) 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, 978525339 + ... + 978527578.

It is an arithmetic number, because the mean of its divisors is an integer number (123294333834).

Almost surely, 2^{2191899267040} is an apocalyptic number.

2191899267040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2191899267040 is an abundant number, since it is smaller than the sum of its proper divisors (3726228756992).

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

2191899267040 is a wasteful number, since it uses less digits than its factorization.

2191899267040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957052939 (or 1957052931 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 58.

The spelling of 2191899267040 in words is "two trillion, one hundred ninety-one billion, eight hundred ninety-nine million, two hundred sixty-seven thousand, forty".