249666630912 has 144 divisors (see below), whose sum is σ = 738599400000. Its totient is φ = 83189385216.

The previous prime is 249666630911. The next prime is 249666630931. The reversal of 249666630912 is 219036666942.

249666630912 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249666630911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22797214 + ... + 22808162.

It is an arithmetic number, because the mean of its divisors is an integer number (5129162500).

Almost surely, 2^249666630912 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 249666630912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369299700000).

249666630912 is an abundant number, since it is smaller than the sum of its proper divisors (488932769088).

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

249666630912 is a wasteful number, since it uses less digits than its factorization.

249666630912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14273 (or 14253 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The spelling of 249666630912 in words is "two hundred forty-nine billion, six hundred sixty-six million, six hundred thirty thousand, nine hundred twelve".