6539045987 has 8 divisors (see below), whose sum is σ = 6564032640. Its totient is φ = 6514107520.

The previous prime is 6539045921. The next prime is 6539046037. The reversal of 6539045987 is 7895409356.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6539045987 - 2¹⁸ = 6538783843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6539044987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272537 + ... + 295557.

It is an arithmetic number, because the mean of its divisors is an integer number (820504080).

Almost surely, 2^6539045987 is an apocalyptic number.

6539045987 is a deficient number, since it is larger than the sum of its proper divisors (24986653).

6539045987 is a wasteful number, since it uses less digits than its factorization.

6539045987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24093.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The square root of 6539045987 is about 80864.3678451764. The cubic root of 6539045987 is about 1869.9850330048.

The spelling of 6539045987 in words is "six billion, five hundred thirty-nine million, forty-five thousand, nine hundred eighty-seven".