6657172116 has 48 divisors (see below), whose sum is σ = 17770959360. Its totient is φ = 1900067040.

The previous prime is 6657172099. The next prime is 6657172121. The reversal of 6657172116 is 6112717566.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40755 + ... + 122373.

It is an arithmetic number, because the mean of its divisors is an integer number (370228320).

Almost surely, 2^6657172116 is an apocalyptic number.

It is an amenable number.

6657172116 is an abundant number, since it is smaller than the sum of its proper divisors (11113787244).

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

6657172116 is a wasteful number, since it uses less digits than its factorization.

6657172116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82604 (or 82602 counting only the distinct ones).

The product of its digits is 105840, while the sum is 42.

The square root of 6657172116 is about 81591.4953656323. The cubic root of 6657172116 is about 1881.1781618451.

The spelling of 6657172116 in words is "six billion, six hundred fifty-seven million, one hundred seventy-two thousand, one hundred sixteen".