8611715440 has 40 divisors (see below), whose sum is σ = 20510593488. Its totient is φ = 3360668160.

The previous prime is 8611715429. The next prime is 8611715447. The reversal of 8611715440 is 445171168.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 8611715440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8611715447) 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, 1309482 + ... + 1316041.

Almost surely, 2^8611715440 is an apocalyptic number.

8611715440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8611715440 is an abundant number, since it is smaller than the sum of its proper divisors (11898878048).

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

8611715440 is a wasteful number, since it uses less digits than its factorization.

8611715440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625577 (or 2625571 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 8611715440 is about 92799.3288768836. The cubic root of 8611715440 is about 2049.7295252910.

The spelling of 8611715440 in words is "eight billion, six hundred eleven million, seven hundred fifteen thousand, four hundred forty".