6401361373 has 24 divisors (see below), whose sum is σ = 7474364856. Its totient is φ = 5459266560.

The previous prime is 6401361361. The next prime is 6401361427. The reversal of 6401361373 is 3731631046.

It can be written as a sum of positive squares in 4 ways, for example, as 2157881209 + 4243480164 = 46453^2 + 65142^2 .

It is not a de Polignac number, because 6401361373 - 2⁵ = 6401361341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401461373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 647161 + ... + 656977.

It is an arithmetic number, because the mean of its divisors is an integer number (311431869).

Almost surely, 2^6401361373 is an apocalyptic number.

It is an amenable number.

6401361373 is a deficient number, since it is larger than the sum of its proper divisors (1073003483).

6401361373 is a wasteful number, since it uses less digits than its factorization.

6401361373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10173 (or 10162 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 6401361373 is about 80008.5081288234. The cubic root of 6401361373 is about 1856.7671685644.

The spelling of 6401361373 in words is "six billion, four hundred one million, three hundred sixty-one thousand, three hundred seventy-three".