249645006996 has 144 divisors (see below), whose sum is σ = 738849226752. Its totient is φ = 64213047360.

The previous prime is 249645006983. The next prime is 249645007009. The reversal of 249645006996 is 699600546942.

It is an interprime number because it is at equal distance from previous prime (249645006983) and next prime (249645007009).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 927661 + ... + 1166123.

It is an arithmetic number, because the mean of its divisors is an integer number (5130897408).

Almost surely, 2^249645006996 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 249645006996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369424613376).

249645006996 is an abundant number, since it is smaller than the sum of its proper divisors (489204219756).

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

249645006996 is a wasteful number, since it uses less digits than its factorization.

249645006996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238602 (or 238589 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 60.

The spelling of 249645006996 in words is "two hundred forty-nine billion, six hundred forty-five million, six thousand, nine hundred ninety-six".