7159161240 has 1024 divisors, whose sum is σ = 32845824000. Its totient is φ = 1341204480.

The previous prime is 7159161197. The next prime is 7159161253. The reversal of 7159161240 is 421619517.

7159161240 is a `hidden beast` number, since 7 + 1 + 591 + 61 + 2 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7159161195 and 7159161204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 36340822 + ... + 36341018.

It is an arithmetic number, because the mean of its divisors is an integer number (32076000).

Almost surely, 2^7159161240 is an apocalyptic number.

7159161240 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7159161240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16422912000).

7159161240 is an abundant number, since it is smaller than the sum of its proper divisors (25686662760).

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

7159161240 is a wasteful number, since it uses less digits than its factorization.

7159161240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 7159161240 is about 84611.8268328961. The cubic root of 7159161240 is about 1927.3209753636.

The spelling of 7159161240 in words is "seven billion, one hundred fifty-nine million, one hundred sixty-one thousand, two hundred forty".