6885539136 has 392 divisors, whose sum is σ = 24253057920. Its totient is φ = 1896846336.

The previous prime is 6885539039. The next prime is 6885539153. The reversal of 6885539136 is 6319355886.

6885539136 is a `hidden beast` number, since 6 + 88 + 553 + 9 + 1 + 3 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (4665600) is a multiple of the sum of its prime divisors (768).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 9470805 + ... + 9471531.

Almost surely, 2^6885539136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6885539136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12126528960).

6885539136 is an abundant number, since it is smaller than the sum of its proper divisors (17367518784).

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

6885539136 is an equidigital number, since it uses as much as digits as its factorization.

6885539136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793 (or 768 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 6885539136 is about 82979.1488025757. The cubic root of 6885539136 is about 1902.4473666299.

The spelling of 6885539136 in words is "six billion, eight hundred eighty-five million, five hundred thirty-nine thousand, one hundred thirty-six".