6445212052 has 24 divisors (see below), whose sum is σ = 11380390560. Its totient is φ = 3193738080.

The previous prime is 6445212049. The next prime is 6445212073. The reversal of 6445212052 is 2502125446.

It is a super-4 number, since 4×6445212052⁴ (a number of 40 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404574 + ... + 420202.

It is an arithmetic number, because the mean of its divisors is an integer number (474182940).

Almost surely, 2^6445212052 is an apocalyptic number.

It is an amenable number.

6445212052 is a deficient number, since it is larger than the sum of its proper divisors (4935178508).

6445212052 is a wasteful number, since it uses less digits than its factorization.

6445212052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16551 (or 16549 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 6445212052 is about 80282.0780249241. The cubic root of 6445212052 is about 1860.9972734223.

Adding to 6445212052 its reverse (2502125446), we get a palindrome (8947337498).

The spelling of 6445212052 in words is "six billion, four hundred forty-five million, two hundred twelve thousand, fifty-two".