20198247387552 has 768 divisors, whose sum is σ = 68721041571840. Its totient is φ = 5722563686400.

The previous prime is 20198247387499. The next prime is 20198247387653. The reversal of 20198247387552 is 25578374289102.

20198247387552 is a `hidden beast` number, since 2 + 0 + 1 + 9 + 8 + 2 + 4 + 73 + 8 + 7 + 552 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20198247387552.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 740635677 + ... + 740662947.

It is an arithmetic number, because the mean of its divisors is an integer number (89480522880).

Almost surely, 2^{20198247387552} 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 20198247387552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34360520785920).

20198247387552 is an abundant number, since it is smaller than the sum of its proper divisors (48522794184288).

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

20198247387552 is a wasteful number, since it uses less digits than its factorization.

20198247387552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27434 (or 27420 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 63.

The spelling of 20198247387552 in words is "twenty trillion, one hundred ninety-eight billion, two hundred forty-seven million, three hundred eighty-seven thousand, five hundred fifty-two".