20098742544 has 200 divisors, whose sum is σ = 59373708768. Its totient is φ = 6562321920.

The previous prime is 20098742537. The next prime is 20098742591. The reversal of 20098742544 is 44524789002.

20098742544 is a `hidden beast` number, since 20 + 0 + 9 + 87 + 4 + 2 + 544 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20098742544.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 18321004 + ... + 18322100.

Almost surely, 2^20098742544 is an apocalyptic number.

20098742544 is a gapful number since it is divisible by the number (24) 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 20098742544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29686854384).

20098742544 is an abundant number, since it is smaller than the sum of its proper divisors (39274966224).

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

20098742544 is a wasteful number, since it uses less digits than its factorization.

20098742544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395 (or 1380 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 20098742544 in words is "twenty billion, ninety-eight million, seven hundred forty-two thousand, five hundred forty-four".