6521172117 has 8 divisors (see below), whose sum is σ = 8695271520. Its totient is φ = 4347260400.

The previous prime is 6521172101. The next prime is 6521172149. The reversal of 6521172117 is 7112711256.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6521172117 - 2⁴ = 6521172101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6521182117) 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 7 ways as a sum of consecutive naturals, for example, 98859 + ... + 151047.

It is an arithmetic number, because the mean of its divisors is an integer number (1086908940).

Almost surely, 2^6521172117 is an apocalyptic number.

It is an amenable number.

6521172117 is a deficient number, since it is larger than the sum of its proper divisors (2174099403).

6521172117 is a wasteful number, since it uses less digits than its factorization.

6521172117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93843.

The product of its digits is 5880, while the sum is 33.

The square root of 6521172117 is about 80753.7746300444. The cubic root of 6521172117 is about 1868.2796685703.

The spelling of 6521172117 in words is "six billion, five hundred twenty-one million, one hundred seventy-two thousand, one hundred seventeen".