989649722800 has 30 divisors (see below), whose sum is σ = 2377633459988. Its totient is φ = 395859888960.

The previous prime is 989649722777. The next prime is 989649722801. The reversal of 989649722800 is 8227946989.

It is not an unprimeable number, because it can be changed into a prime (989649722801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1237061754 + ... + 1237062553.

Almost surely, 2^989649722800 is an apocalyptic number.

It is an amenable number.

989649722800 is an abundant number, since it is smaller than the sum of its proper divisors (1387983737188).

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

989649722800 is a wasteful number, since it uses less digits than its factorization.

989649722800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474124325 (or 2474124314 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 64.

The spelling of 989649722800 in words is "nine hundred eighty-nine billion, six hundred forty-nine million, seven hundred twenty-two thousand, eight hundred".