2126351643 has 8 divisors (see below), whose sum is σ = 3053222928. Its totient is φ = 1308524064.

The previous prime is 2126351641. The next prime is 2126351651. The reversal of 2126351643 is 3461536212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2126351643 - 2¹ = 2126351641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2126351641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27260880 + ... + 27260957.

It is an arithmetic number, because the mean of its divisors is an integer number (381652866).

Almost surely, 2^2126351643 is an apocalyptic number.

2126351643 is a deficient number, since it is larger than the sum of its proper divisors (926871285).

2126351643 is a wasteful number, since it uses less digits than its factorization.

2126351643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54521853.

The product of its digits is 25920, while the sum is 33.

The square root of 2126351643 is about 46112.3805826591. The cubic root of 2126351643 is about 1285.9133222428.

Adding to 2126351643 its reverse (3461536212), we get a palindrome (5587887855).

The spelling of 2126351643 in words is "two billion, one hundred twenty-six million, three hundred fifty-one thousand, six hundred forty-three".