7115157440 has 56 divisors (see below), whose sum is σ = 17028261600. Its totient is φ = 2831735808.

The previous prime is 7115157431. The next prime is 7115157443. The reversal of 7115157440 is 447515117.

It is a self number, because there is not a number n which added to its sum of digits gives 7115157440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7115157443) 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, 7814 + ... + 119546.

It is an arithmetic number, because the mean of its divisors is an integer number (304076100).

Almost surely, 2^7115157440 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 7115157440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8514130800).

7115157440 is an abundant number, since it is smaller than the sum of its proper divisors (9913104160).

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

7115157440 is a wasteful number, since it uses less digits than its factorization.

7115157440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111949 (or 111939 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 7115157440 is about 84351.3926381776. The cubic root of 7115157440 is about 1923.3640964242.

The spelling of 7115157440 in words is "seven billion, one hundred fifteen million, one hundred fifty-seven thousand, four hundred forty".