8465381880 has 128 divisors (see below), whose sum is σ = 27817473600. Its totient is φ = 2051366912.

The previous prime is 8465381879. The next prime is 8465381893. The reversal of 8465381880 is 881835648.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12387 + ... + 130706.

Almost surely, 2^8465381880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8465381880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13908736800).

8465381880 is an abundant number, since it is smaller than the sum of its proper divisors (19352091720).

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

8465381880 is a wasteful number, since it uses less digits than its factorization.

8465381880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143153 (or 143149 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 51.

The square root of 8465381880 is about 92007.5099108763. The cubic root of 8465381880 is about 2038.0532081080.

The spelling of 8465381880 in words is "eight billion, four hundred sixty-five million, three hundred eighty-one thousand, eight hundred eighty".