6539902471552 has 32 divisors (see below), whose sum is σ = 13065003723600. Its totient is φ = 3260842713600.

The previous prime is 6539902471517. The next prime is 6539902471573. The reversal of 6539902471552 is 2551742099356.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71114199 + ... + 71206102.

Almost surely, 2^{6539902471552} is an apocalyptic number.

It is an amenable number.

6539902471552 is a deficient number, since it is larger than the sum of its proper divisors (6525101252048).

6539902471552 is a wasteful number, since it uses less digits than its factorization.

6539902471552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142320674 (or 142320662 counting only the distinct ones).

The product of its (nonzero) digits is 20412000, while the sum is 58.

The spelling of 6539902471552 in words is "six trillion, five hundred thirty-nine billion, nine hundred two million, four hundred seventy-one thousand, five hundred fifty-two".