7871212944 has 240 divisors, whose sum is σ = 26160825600. Its totient is φ = 2161603584.

The previous prime is 7871212931. The next prime is 7871213023. The reversal of 7871212944 is 4492121787.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 7871212944.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8564517 + ... + 8565435.

It is an arithmetic number, because the mean of its divisors is an integer number (109003440).

Almost surely, 2^7871212944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7871212944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13080412800).

7871212944 is an abundant number, since it is smaller than the sum of its proper divisors (18289612656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7871212944 is a wasteful number, since it uses less digits than its factorization.

7871212944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262 (or 1253 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 7871212944 is about 88719.8565373051. The cubic root of 7871212944 is about 1989.2096340298.

The spelling of 7871212944 in words is "seven billion, eight hundred seventy-one million, two hundred twelve thousand, nine hundred forty-four".