8170642464 has 48 divisors (see below), whose sum is σ = 21549638880. Its totient is φ = 2710632960.

The previous prime is 8170642453. The next prime is 8170642481. The reversal of 8170642464 is 4642460718.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181429 + ... + 221940.

It is an arithmetic number, because the mean of its divisors is an integer number (448950810).

Almost surely, 2^8170642464 is an apocalyptic number.

It is an amenable number.

8170642464 is an abundant number, since it is smaller than the sum of its proper divisors (13378996416).

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

8170642464 is a wasteful number, since it uses less digits than its factorization.

8170642464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403593 (or 403585 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 8170642464 is about 90391.6061589792. The cubic root of 8170642464 is about 2014.1202795746.

The spelling of 8170642464 in words is "eight billion, one hundred seventy million, six hundred forty-two thousand, four hundred sixty-four".