6615142423 has 4 divisors (see below), whose sum is σ = 6713875960. Its totient is φ = 6516408888.

The previous prime is 6615142351. The next prime is 6615142433. The reversal of 6615142423 is 3242415166.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6615142423 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 (6615142433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49366668 + ... + 49366801.

It is an arithmetic number, because the mean of its divisors is an integer number (1678468990).

Almost surely, 2^6615142423 is an apocalyptic number.

6615142423 is a deficient number, since it is larger than the sum of its proper divisors (98733537).

6615142423 is an equidigital number, since it uses as much as digits as its factorization.

6615142423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98733536.

The product of its digits is 34560, while the sum is 34.

The square root of 6615142423 is about 81333.5258242258. The cubic root of 6615142423 is about 1877.2108958202.

Adding to 6615142423 its reverse (3242415166), we get a palindrome (9857557589).

The spelling of 6615142423 in words is "six billion, six hundred fifteen million, one hundred forty-two thousand, four hundred twenty-three".