6440451153 has 8 divisors (see below), whose sum is σ = 8600301600. Its totient is φ = 4287117408.

The previous prime is 6440451137. The next prime is 6440451161. The reversal of 6440451153 is 3511540446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6440451153 - 2⁴ = 6440451137 is a prime.

It is a super-2 number, since 2×6440451153² = 82958822108358058818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6440451103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1626868 + ... + 1630821.

It is an arithmetic number, because the mean of its divisors is an integer number (1075037700).

Almost surely, 2^6440451153 is an apocalyptic number.

It is an amenable number.

6440451153 is a deficient number, since it is larger than the sum of its proper divisors (2159850447).

6440451153 is a wasteful number, since it uses less digits than its factorization.

6440451153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3258351.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 6440451153 is about 80252.4214774856. The cubic root of 6440451153 is about 1860.5389382306.

Adding to 6440451153 its reverse (3511540446), we get a palindrome (9951991599).

The spelling of 6440451153 in words is "six billion, four hundred forty million, four hundred fifty-one thousand, one hundred fifty-three".