9145687494864 has 80 divisors (see below), whose sum is σ = 23696641175040. Its totient is φ = 3039495515520.

The previous prime is 9145687494863. The next prime is 9145687494871. The reversal of 9145687494864 is 4684947865419.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9145687494863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259133059 + ... + 259168349.

It is an arithmetic number, because the mean of its divisors is an integer number (296208014688).

Almost surely, 2^{9145687494864} is an apocalyptic number.

It is an amenable number.

9145687494864 is an abundant number, since it is smaller than the sum of its proper divisors (14550953680176).

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

9145687494864 is a wasteful number, since it uses less digits than its factorization.

9145687494864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51208 (or 51202 counting only the distinct ones).

The product of its digits is 1672151040, while the sum is 75.

The spelling of 9145687494864 in words is "nine trillion, one hundred forty-five billion, six hundred eighty-seven million, four hundred ninety-four thousand, eight hundred sixty-four".