6517994229 has 24 divisors (see below), whose sum is σ = 9678987864. Its totient is φ = 4224192000.

The previous prime is 6517994221. The next prime is 6517994243. The reversal of 6517994229 is 9224997156.

6517994229 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1594165329 + 4923828900 = 39927^2 + 70170^2 .

It is not a de Polignac number, because 6517994229 - 2³ = 6517994221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6517994221) 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, 72259 + ... + 135119.

It is an arithmetic number, because the mean of its divisors is an integer number (403291161).

Almost surely, 2^6517994229 is an apocalyptic number.

It is an amenable number.

6517994229 is a deficient number, since it is larger than the sum of its proper divisors (3160993635).

6517994229 is a wasteful number, since it uses less digits than its factorization.

6517994229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63189 (or 63186 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 6517994229 is about 80734.0958269801. The cubic root of 6517994229 is about 1867.9761368265.

The spelling of 6517994229 in words is "six billion, five hundred seventeen million, nine hundred ninety-four thousand, two hundred twenty-nine".