6529145620 has 12 divisors (see below), whose sum is σ = 13711205844. Its totient is φ = 2611658240.

The previous prime is 6529145593. The next prime is 6529145621. The reversal of 6529145620 is 265419256.

It can be written as a sum of positive squares in 2 ways, for example, as 784112004 + 5745033616 = 28002^2 + 75796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6529145621) 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, 163228621 + ... + 163228660.

It is an arithmetic number, because the mean of its divisors is an integer number (1142600487).

Almost surely, 2^6529145620 is an apocalyptic number.

It is an amenable number.

6529145620 is an abundant number, since it is smaller than the sum of its proper divisors (7182060224).

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

6529145620 is a wasteful number, since it uses less digits than its factorization.

6529145620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326457290 (or 326457288 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 6529145620 is about 80803.1287760567. The cubic root of 6529145620 is about 1869.0408132405.

The spelling of 6529145620 in words is "six billion, five hundred twenty-nine million, one hundred forty-five thousand, six hundred twenty".