6514421631 has 4 divisors (see below), whose sum is σ = 8685895512. Its totient is φ = 4342947752.

The previous prime is 6514421593. The next prime is 6514421657. The reversal of 6514421631 is 1361244156.

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 6514421631 - 2¹⁰ = 6514420607 is a prime.

It is a super-2 number, since 2×6514421631² = 84875378372881400322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6514421592 and 6514421601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6514421731) 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, 1085736936 + ... + 1085736941.

It is an arithmetic number, because the mean of its divisors is an integer number (2171473878).

Almost surely, 2^6514421631 is an apocalyptic number.

6514421631 is a deficient number, since it is larger than the sum of its proper divisors (2171473881).

6514421631 is a wasteful number, since it uses less digits than its factorization.

6514421631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171473880.

The product of its digits is 17280, while the sum is 33.

The square root of 6514421631 is about 80711.9670866718. The cubic root of 6514421631 is about 1867.6347870579.

Adding to 6514421631 its reverse (1361244156), we get a palindrome (7875665787).

The spelling of 6514421631 in words is "six billion, five hundred fourteen million, four hundred twenty-one thousand, six hundred thirty-one".