6514994641 has 4 divisors (see below), whose sum is σ = 6530041252. Its totient is φ = 6499948032.

The previous prime is 6514994579. The next prime is 6514994653. The reversal of 6514994641 is 1464994156.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4106246400 + 2408748241 = 64080^2 + 49079^2 .

It is a cyclic number.

It is not a de Polignac number, because 6514994641 - 2¹⁷ = 6514863569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6514994141) 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, 7522656 + ... + 7523521.

It is an arithmetic number, because the mean of its divisors is an integer number (1632510313).

Almost surely, 2^6514994641 is an apocalyptic number.

It is an amenable number.

6514994641 is a deficient number, since it is larger than the sum of its proper divisors (15046611).

6514994641 is a wasteful number, since it uses less digits than its factorization.

6514994641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15046610.

The product of its digits is 933120, while the sum is 49.

The square root of 6514994641 is about 80715.5167300563. The cubic root of 6514994641 is about 1867.6895446452.

The spelling of 6514994641 in words is "six billion, five hundred fourteen million, nine hundred ninety-four thousand, six hundred forty-one".