2641531421 has 8 divisors (see below), whose sum is σ = 2772960000. Its totient is φ = 2512991520.

The previous prime is 2641531379. The next prime is 2641531423. The reversal of 2641531421 is 1241351462.

2641531421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2641531421 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 (2641531423) 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, 720296 + ... + 723953.

It is an arithmetic number, because the mean of its divisors is an integer number (346620000).

Almost surely, 2^2641531421 is an apocalyptic number.

It is an amenable number.

2641531421 is a deficient number, since it is larger than the sum of its proper divisors (131428579).

2641531421 is a wasteful number, since it uses less digits than its factorization.

2641531421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444339.

The product of its digits is 5760, while the sum is 29.

The square root of 2641531421 is about 51395.8307744899. The cubic root of 2641531421 is about 1382.3518359420.

Adding to 2641531421 its reverse (1241351462), we get a palindrome (3882882883).

The spelling of 2641531421 in words is "two billion, six hundred forty-one million, five hundred thirty-one thousand, four hundred twenty-one".