20875291358320 has 160 divisors (see below), whose sum is σ = 56895192224640. Its totient is φ = 6975323320320.

The previous prime is 20875291358267. The next prime is 20875291358321. The reversal of 20875291358320 is 2385319257802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20875291358321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 920214 + ... + 6526666.

It is an arithmetic number, because the mean of its divisors is an integer number (355594951404).

Almost surely, 2^{20875291358320} is an apocalyptic number.

20875291358320 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 20875291358320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28447596112320).

20875291358320 is an abundant number, since it is smaller than the sum of its proper divisors (36019900866320).

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

20875291358320 is a wasteful number, since it uses less digits than its factorization.

20875291358320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5606643 (or 5606637 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 20875291358320 in words is "twenty trillion, eight hundred seventy-five billion, two hundred ninety-one million, three hundred fifty-eight thousand, three hundred twenty".