249246707568 has 80 divisors (see below), whose sum is σ = 654133418496. Its totient is φ = 81764381440.

The previous prime is 249246707519. The next prime is 249246707599. The reversal of 249246707568 is 865707642942.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1832605 + ... + 1963907.

Almost surely, 2^249246707568 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 249246707568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327066709248).

249246707568 is an abundant number, since it is smaller than the sum of its proper divisors (404886710928).

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

249246707568 is a wasteful number, since it uses less digits than its factorization.

249246707568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131942 (or 131936 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 60.

The spelling of 249246707568 in words is "two hundred forty-nine billion, two hundred forty-six million, seven hundred seven thousand, five hundred sixty-eight".