2091567981652 has 24 divisors (see below), whose sum is σ = 3778500886272. Its totient is φ = 1011999595200.

The previous prime is 2091567981583. The next prime is 2091567981661. The reversal of 2091567981652 is 2561897651902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2203968 + ... + 3006760.

It is an arithmetic number, because the mean of its divisors is an integer number (157437536928).

Almost surely, 2^{2091567981652} is an apocalyptic number.

It is an amenable number.

2091567981652 is a deficient number, since it is larger than the sum of its proper divisors (1686932904620).

2091567981652 is a wasteful number, since it uses less digits than its factorization.

2091567981652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823839 (or 823837 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 61.

The spelling of 2091567981652 in words is "two trillion, ninety-one billion, five hundred sixty-seven million, nine hundred eighty-one thousand, six hundred fifty-two".