6685461138 has 16 divisors (see below), whose sum is σ = 13655410560. Its totient is φ = 2181072336.

The previous prime is 6685461121. The next prime is 6685461179. The reversal of 6685461138 is 8311645866.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11853373 + ... + 11853936.

It is an arithmetic number, because the mean of its divisors is an integer number (853463160).

Almost surely, 2^6685461138 is an apocalyptic number.

6685461138 is an abundant number, since it is smaller than the sum of its proper divisors (6969949422).

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

6685461138 is a wasteful number, since it uses less digits than its factorization.

6685461138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23707361.

The product of its digits is 829440, while the sum is 48.

The square root of 6685461138 is about 81764.6692526791. The cubic root of 6685461138 is about 1883.8390258062.

The spelling of 6685461138 in words is "six billion, six hundred eighty-five million, four hundred sixty-one thousand, one hundred thirty-eight".