6780478100 has 72 divisors (see below), whose sum is σ = 16569106176. Its totient is φ = 2386080000.

The previous prime is 6780478099. The next prime is 6780478109. The reversal of 6780478100 is 18740876.

It is a super-2 number, since 2×6780478100² = 91949766529159220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6780478109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65321 + ... + 133520.

Almost surely, 2^6780478100 is an apocalyptic number.

It is an amenable number.

6780478100 is an abundant number, since it is smaller than the sum of its proper divisors (9788628076).

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

6780478100 is a wasteful number, since it uses less digits than its factorization.

6780478100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198897 (or 198890 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 6780478100 is about 82343.6585293610. The cubic root of 6780478100 is about 1892.7217488266.

The spelling of 6780478100 in words is "six billion, seven hundred eighty million, four hundred seventy-eight thousand, one hundred".