7999870501 has 4 divisors (see below), whose sum is σ = 9142709152. Its totient is φ = 6857031852.

The previous prime is 7999870481. The next prime is 7999870519. The reversal of 7999870501 is 1050789997.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1050789997 = 1061 ⋅990377.

It is a cyclic number.

It is not a de Polignac number, because 7999870501 - 2⁵ = 7999870469 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 (7999876501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571419315 + ... + 571419328.

It is an arithmetic number, because the mean of its divisors is an integer number (2285677288).

Almost surely, 2^7999870501 is an apocalyptic number.

It is an amenable number.

7999870501 is a deficient number, since it is larger than the sum of its proper divisors (1142838651).

7999870501 is a wasteful number, since it uses less digits than its factorization.

7999870501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142838650.

The product of its (nonzero) digits is 1428840, while the sum is 55.

The square root of 7999870501 is about 89441.9951756444. The cubic root of 7999870501 is about 1999.9892083584.

The spelling of 7999870501 in words is "seven billion, nine hundred ninety-nine million, eight hundred seventy thousand, five hundred one".