20003630245170 has 256 divisors, whose sum is σ = 56717621452800. Its totient is φ = 4451336570880.

The previous prime is 20003630245153. The next prime is 20003630245273. The reversal of 20003630245170 is 7154203630002.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 641970051 + ... + 642001209.

It is an arithmetic number, because the mean of its divisors is an integer number (221553208800).

Almost surely, 2^{20003630245170} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20003630245170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28358810726400).

20003630245170 is an abundant number, since it is smaller than the sum of its proper divisors (36713991207630).

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

20003630245170 is a wasteful number, since it uses less digits than its factorization.

20003630245170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32025.

The product of its (nonzero) digits is 30240, while the sum is 33.

Adding to 20003630245170 its reverse (7154203630002), we get a palindrome (27157833875172).

The spelling of 20003630245170 in words is "twenty trillion, three billion, six hundred thirty million, two hundred forty-five thousand, one hundred seventy".