6631045420 has 12 divisors (see below), whose sum is σ = 13925195424. Its totient is φ = 2652418160.

The previous prime is 6631045403. The next prime is 6631045423. The reversal of 6631045420 is 245401366.

It is not an unprimeable number, because it can be changed into a prime (6631045423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165776116 + ... + 165776155.

It is an arithmetic number, because the mean of its divisors is an integer number (1160432952).

Almost surely, 2^6631045420 is an apocalyptic number.

It is an amenable number.

6631045420 is an abundant number, since it is smaller than the sum of its proper divisors (7294150004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6631045420 is a wasteful number, since it uses less digits than its factorization.

6631045420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331552280 (or 331552278 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 6631045420 is about 81431.2312322490. The cubic root of 6631045420 is about 1878.7139820485.

Adding to 6631045420 its reverse (245401366), we get a palindrome (6876446786).

The spelling of 6631045420 in words is "six billion, six hundred thirty-one million, forty-five thousand, four hundred twenty".