6445542033 has 40 divisors (see below), whose sum is σ = 11028346560. Its totient is φ = 3675028320.

The previous prime is 6445542029. The next prime is 6445542067. The reversal of 6445542033 is 3302455446.

6445542033 is a `hidden beast` number, since 6 + 445 + 5 + 4 + 203 + 3 = 666.

It is not a de Polignac number, because 6445542033 - 2² = 6445542029 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6445542013) 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 39 ways as a sum of consecutive naturals, for example, 249058 + ... + 273716.

It is an arithmetic number, because the mean of its divisors is an integer number (275708664).

Almost surely, 2^6445542033 is an apocalyptic number.

6445542033 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

6445542033 is a deficient number, since it is larger than the sum of its proper divisors (4582804527).

6445542033 is a wasteful number, since it uses less digits than its factorization.

6445542033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25139 (or 25130 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

The square root of 6445542033 is about 80284.1331335152. The cubic root of 6445542033 is about 1861.0290325667.

Adding to 6445542033 its reverse (3302455446), we get a palindrome (9747997479).

The spelling of 6445542033 in words is "six billion, four hundred forty-five million, five hundred forty-two thousand, thirty-three".