869149184880 has 160 divisors (see below), whose sum is σ = 2944882372608. Its totient is φ = 211102617600.

The previous prime is 869149184867. The next prime is 869149184881. The reversal of 869149184880 is 88481941968.

It is a super-2 number, since 2×869149184880² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869149184881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3309436 + ... + 3562395.

Almost surely, 2^869149184880 is an apocalyptic number.

869149184880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

869149184880 is an abundant number, since it is smaller than the sum of its proper divisors (2075733187728).

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

869149184880 is a wasteful number, since it uses less digits than its factorization.

869149184880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6871895 (or 6871889 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 66.

The spelling of 869149184880 in words is "eight hundred sixty-nine billion, one hundred forty-nine million, one hundred eighty-four thousand, eight hundred eighty".