2142651340591 has 4 divisors (see below), whose sum is σ = 2255422463800. Its totient is φ = 2029880217384.

The previous prime is 2142651340579. The next prime is 2142651340633. The reversal of 2142651340591 is 1950431562412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2142651340591 - 2¹¹ = 2142651338543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142651370591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56385561576 + ... + 56385561613.

It is an arithmetic number, because the mean of its divisors is an integer number (563855615950).

Almost surely, 2^{2142651340591} is an apocalyptic number.

2142651340591 is a deficient number, since it is larger than the sum of its proper divisors (112771123209).

2142651340591 is a wasteful number, since it uses less digits than its factorization.

2142651340591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112771123208.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 2142651340591 in words is "two trillion, one hundred forty-two billion, six hundred fifty-one million, three hundred forty thousand, five hundred ninety-one".