6529940538804 has 18 divisors (see below), whose sum is σ = 16506238584290. Its totient is φ = 2176646846256.

The previous prime is 6529940538703. The next prime is 6529940538839. The reversal of 6529940538804 is 4088350499256.

6529940538804 is a `hidden beast` number, since 6 + 5 + 2 + 9 + 94 + 0 + 538 + 8 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6430545365904 + 99395172900 = 2535852^2 + 315270^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90693618559 + ... + 90693618630.

Almost surely, 2^{6529940538804} is an apocalyptic number.

It is an amenable number.

6529940538804 is an abundant number, since it is smaller than the sum of its proper divisors (9976298045486).

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

6529940538804 is a wasteful number, since it uses less digits than its factorization.

6529940538804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181387237199 (or 181387237194 counting only the distinct ones).

The product of its (nonzero) digits is 74649600, while the sum is 63.

The spelling of 6529940538804 in words is "six trillion, five hundred twenty-nine billion, nine hundred forty million, five hundred thirty-eight thousand, eight hundred four".