7872143015 has 8 divisors (see below), whose sum is σ = 10305350928. Its totient is φ = 5725194880.

The previous prime is 7872143011. The next prime is 7872143021. The reversal of 7872143015 is 5103412787.

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

It is not a de Polignac number, because 7872143015 - 2² = 7872143011 is a prime.

It is a super-2 number, since 2×7872143015² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7872143015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7872143011) 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, 71564882 + ... + 71564991.

It is an arithmetic number, because the mean of its divisors is an integer number (1288168866).

Almost surely, 2^7872143015 is an apocalyptic number.

7872143015 is a deficient number, since it is larger than the sum of its proper divisors (2433207913).

7872143015 is a wasteful number, since it uses less digits than its factorization.

7872143015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143129889.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 7872143015 is about 88725.0979993823. The cubic root of 7872143015 is about 1989.2879799951.

The spelling of 7872143015 in words is "seven billion, eight hundred seventy-two million, one hundred forty-three thousand, fifteen".