20899366130048 has 128 divisors (see below), whose sum is σ = 48315546048000. Its totient is φ = 8819979632640.

The previous prime is 20899366130033. The next prime is 20899366130057. The reversal of 20899366130048 is 84003166399802.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16691303 + ... + 17899673.

It is an arithmetic number, because the mean of its divisors is an integer number (377465203500).

Almost surely, 2^{20899366130048} is an apocalyptic number.

20899366130048 is a gapful number since it is divisible by the number (28) 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 20899366130048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24157773024000).

20899366130048 is an abundant number, since it is smaller than the sum of its proper divisors (27416179917952).

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

20899366130048 is a wasteful number, since it uses less digits than its factorization.

20899366130048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208688 (or 1208676 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 59.

The spelling of 20899366130048 in words is "twenty trillion, eight hundred ninety-nine billion, three hundred sixty-six million, one hundred thirty thousand, forty-eight".