20453634641000 has 128 divisors (see below), whose sum is σ = 52222296447360. Its totient is φ = 7436297088000.

The previous prime is 20453634640993. The next prime is 20453634641039. The reversal of 20453634641000 is 14643635402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59702192 + ... + 60043808.

It is an arithmetic number, because the mean of its divisors is an integer number (407986690995).

Almost surely, 2^{20453634641000} is an apocalyptic number.

20453634641000 is a gapful number since it is divisible by the number (20) 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 20453634641000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26111148223680).

20453634641000 is an abundant number, since it is smaller than the sum of its proper divisors (31768661806360).

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

20453634641000 is a wasteful number, since it uses less digits than its factorization.

20453634641000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347092 (or 347078 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 20453634641000 in words is "twenty trillion, four hundred fifty-three billion, six hundred thirty-four million, six hundred forty-one thousand".