250242066640 has 160 divisors (see below), whose sum is σ = 612399553920. Its totient is φ = 95003443200.

The previous prime is 250242066629. The next prime is 250242066643. The reversal of 250242066640 is 46660242052.

250242066640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 250242066640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250242066643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18764775 + ... + 18778105.

It is an arithmetic number, because the mean of its divisors is an integer number (3827497212).

Almost surely, 2^250242066640 is an apocalyptic number.

250242066640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250242066640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306199776960).

250242066640 is an abundant number, since it is smaller than the sum of its proper divisors (362157487280).

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

250242066640 is a wasteful number, since it uses less digits than its factorization.

250242066640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13541 (or 13535 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 250242066640 in words is "two hundred fifty billion, two hundred forty-two million, sixty-six thousand, six hundred forty".