1538248424640 has 224 divisors, whose sum is σ = 4926067384320. Its totient is φ = 406666100736.

The previous prime is 1538248424617. The next prime is 1538248424651. The reversal of 1538248424640 is 464248428351.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197384584 + ... + 197392376.

Almost surely, 2^{1538248424640} is an apocalyptic number.

1538248424640 is a gapful number since it is divisible by the number (10) 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 1538248424640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2463033692160).

1538248424640 is an abundant number, since it is smaller than the sum of its proper divisors (3387818959680).

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

1538248424640 is a wasteful number, since it uses less digits than its factorization.

1538248424640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9559 (or 9549 counting only the distinct ones).

The product of its (nonzero) digits is 5898240, while the sum is 51.

The spelling of 1538248424640 in words is "one trillion, five hundred thirty-eight billion, two hundred forty-eight million, four hundred twenty-four thousand, six hundred forty".