7870172963217 has 8 divisors (see below), whose sum is σ = 11045856790560. Its totient is φ = 4970635555680.

The previous prime is 7870172963167. The next prime is 7870172963239. The reversal of 7870172963217 is 7123692710787.

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

It is not a de Polignac number, because 7870172963217 - 2³⁰ = 7869099221393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7870172963717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69036604884 + ... + 69036604997.

It is an arithmetic number, because the mean of its divisors is an integer number (1380732098820).

Almost surely, 2^{7870172963217} is an apocalyptic number.

It is an amenable number.

7870172963217 is a deficient number, since it is larger than the sum of its proper divisors (3175683827343).

7870172963217 is a wasteful number, since it uses less digits than its factorization.

7870172963217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138073209903.

The product of its (nonzero) digits is 12446784, while the sum is 60.

The spelling of 7870172963217 in words is "seven trillion, eight hundred seventy billion, one hundred seventy-two million, nine hundred sixty-three thousand, two hundred seventeen".