6378561801 has 24 divisors (see below), whose sum is σ = 9706837920. Its totient is φ = 4025059776.

The previous prime is 6378561769. The next prime is 6378561817. The reversal of 6378561801 is 1081658736.

6378561801 is a `hidden beast` number, since 6 + 3 + 7 + 8 + 561 + 80 + 1 = 666.

It is not a de Polignac number, because 6378561801 - 2⁵ = 6378561769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6378561401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188370 + ... + 219636.

It is an arithmetic number, because the mean of its divisors is an integer number (404451580).

Almost surely, 2^6378561801 is an apocalyptic number.

It is an amenable number.

6378561801 is a deficient number, since it is larger than the sum of its proper divisors (3328276119).

6378561801 is a wasteful number, since it uses less digits than its factorization.

6378561801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32485 (or 32482 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 6378561801 is about 79865.8988617795. The cubic root of 6378561801 is about 1854.5601455394.

The spelling of 6378561801 in words is "six billion, three hundred seventy-eight million, five hundred sixty-one thousand, eight hundred one".