6685153980 has 24 divisors (see below), whose sum is σ = 18718431312. Its totient is φ = 1782707712.

The previous prime is 6685153973. The next prime is 6685153997. The reversal of 6685153980 is 893515866.

It is a congruent number.

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, 55709557 + ... + 55709676.

It is an arithmetic number, because the mean of its divisors is an integer number (779934638).

Almost surely, 2^6685153980 is an apocalyptic number.

6685153980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6685153980 is an abundant number, since it is smaller than the sum of its proper divisors (12033277332).

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

6685153980 is a wasteful number, since it uses less digits than its factorization.

6685153980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111419245 (or 111419243 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 51.

The square root of 6685153980 is about 81762.7909259463. The cubic root of 6685153980 is about 1883.8101748874.

The spelling of 6685153980 in words is "six billion, six hundred eighty-five million, one hundred fifty-three thousand, nine hundred eighty".