7191239488 has 56 divisors (see below), whose sum is σ = 14717774984. Its totient is φ = 3483648000.

The previous prime is 7191239483. The next prime is 7191239507. The reversal of 7191239488 is 8849321917.

It can be written as a sum of positive squares in 4 ways, for example, as 2797140544 + 4394098944 = 52888^2 + 66288^2 .

It is a super-5 number, since 5×7191239488⁵ (a number of 50 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7191239483) 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, 564388 + ... + 576988.

Almost surely, 2^7191239488 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 7191239488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7358887492).

7191239488 is an abundant number, since it is smaller than the sum of its proper divisors (7526535496).

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

7191239488 is a wasteful number, since it uses less digits than its factorization.

7191239488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12891 (or 12881 counting only the distinct ones).

The product of its digits is 870912, while the sum is 52.

The square root of 7191239488 is about 84801.1762182577. The cubic root of 7191239488 is about 1930.1952864221.

The spelling of 7191239488 in words is "seven billion, one hundred ninety-one million, two hundred thirty-nine thousand, four hundred eighty-eight".