2135722741643 has 4 divisors (see below), whose sum is σ = 2143323178728. Its totient is φ = 2128122304560.

The previous prime is 2135722741637. The next prime is 2135722741693. The reversal of 2135722741643 is 3461472275312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2135722741643 is a prime.

It is a super-2 number, since 2×2135722741643² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2135722741693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3800218121 + ... + 3800218682.

It is an arithmetic number, because the mean of its divisors is an integer number (535830794682).

Almost surely, 2^{2135722741643} is an apocalyptic number.

2135722741643 is a deficient number, since it is larger than the sum of its proper divisors (7600437085).

2135722741643 is an equidigital number, since it uses as much as digits as its factorization.

2135722741643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7600437084.

The product of its digits is 1693440, while the sum is 47.

The spelling of 2135722741643 in words is "two trillion, one hundred thirty-five billion, seven hundred twenty-two million, seven hundred forty-one thousand, six hundred forty-three".