249986612928 has 448 divisors, whose sum is σ = 781450629120. Its totient is φ = 69905203200.

The previous prime is 249986612917. The next prime is 249986612951. The reversal of 249986612928 is 829216689942.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 83022943 + ... + 83025953.

It is an arithmetic number, because the mean of its divisors is an integer number (1744309440).

Almost surely, 2^249986612928 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 249986612928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390725314560).

249986612928 is an abundant number, since it is smaller than the sum of its proper divisors (531464016192).

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

249986612928 is a wasteful number, since it uses less digits than its factorization.

249986612928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136 (or 3126 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 66.

The spelling of 249986612928 in words is "two hundred forty-nine billion, nine hundred eighty-six million, six hundred twelve thousand, nine hundred twenty-eight".