6614159991 has 4 divisors (see below), whose sum is σ = 8818879992. Its totient is φ = 4409439992.

The previous prime is 6614159947. The next prime is 6614159999. The reversal of 6614159991 is 1999514166.

6614159991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6614159991 - 2¹¹ = 6614157943 is a prime.

It is a super-2 number, since 2×6614159991² = 87494224773090240162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6614159999) 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, 1102359996 + ... + 1102360001.

It is an arithmetic number, because the mean of its divisors is an integer number (2204719998).

Almost surely, 2^6614159991 is an apocalyptic number.

6614159991 is a deficient number, since it is larger than the sum of its proper divisors (2204720001).

6614159991 is a wasteful number, since it uses less digits than its factorization.

6614159991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204720000.

The product of its digits is 524880, while the sum is 51.

The square root of 6614159991 is about 81327.4860732828. The cubic root of 6614159991 is about 1877.1179613958.

The spelling of 6614159991 in words is "six billion, six hundred fourteen million, one hundred fifty-nine thousand, nine hundred ninety-one".