6501442923 has 24 divisors (see below), whose sum is σ = 10286265600. Its totient is φ = 3938667264.

The previous prime is 6501442919. The next prime is 6501442967. The reversal of 6501442923 is 3292441056.

It is a happy number.

It is not a de Polignac number, because 6501442923 - 2² = 6501442919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6501442903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 728203 + ... + 737076.

It is an arithmetic number, because the mean of its divisors is an integer number (428594400).

Almost surely, 2^6501442923 is an apocalyptic number.

6501442923 is a deficient number, since it is larger than the sum of its proper divisors (3784822677).

6501442923 is a wasteful number, since it uses less digits than its factorization.

6501442923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465331 (or 1465328 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 6501442923 is about 80631.5256149851. The cubic root of 6501442923 is about 1866.3936637348.

Adding to 6501442923 its reverse (3292441056), we get a palindrome (9793883979).

The spelling of 6501442923 in words is "six billion, five hundred one million, four hundred forty-two thousand, nine hundred twenty-three".