8615494881 has 128 divisors (see below), whose sum is σ = 16043417600. Its totient is φ = 4459380480.

The previous prime is 8615494879. The next prime is 8615494891. The reversal of 8615494881 is 1884945168.

It is a happy number.

8615494881 is a `hidden beast` number, since 8 + 6 + 154 + 9 + 488 + 1 = 666.

It is not a de Polignac number, because 8615494881 - 2¹ = 8615494879 is a prime.

It is a super-2 number, since 2×8615494881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8615494831) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8104356 + ... + 8105418.

It is an arithmetic number, because the mean of its divisors is an integer number (125339200).

Almost surely, 2^8615494881 is an apocalyptic number.

It is an amenable number.

8615494881 is a deficient number, since it is larger than the sum of its proper divisors (7427922719).

8615494881 is a wasteful number, since it uses less digits than its factorization.

8615494881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196 (or 1190 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 54.

The square root of 8615494881 is about 92819.6901578539. The cubic root of 8615494881 is about 2050.0293377519.

The spelling of 8615494881 in words is "eight billion, six hundred fifteen million, four hundred ninety-four thousand, eight hundred eighty-one".