8671455840 has 48 divisors (see below), whose sum is σ = 27315087408. Its totient is φ = 2312388096.

The previous prime is 8671455823. The next prime is 8671455841. The reversal of 8671455840 is 485541768.

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

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 8671455840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8671455841) 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, 9032287 + ... + 9033246.

It is an arithmetic number, because the mean of its divisors is an integer number (569064321).

Almost surely, 2^8671455840 is an apocalyptic number.

8671455840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8671455840 is an abundant number, since it is smaller than the sum of its proper divisors (18643631568).

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

8671455840 is a wasteful number, since it uses less digits than its factorization.

8671455840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18065551 (or 18065543 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

The square root of 8671455840 is about 93120.6520595727. The cubic root of 8671455840 is about 2054.4583390160.

The spelling of 8671455840 in words is "eight billion, six hundred seventy-one million, four hundred fifty-five thousand, eight hundred forty".