20355740455710 has 256 divisors, whose sum is σ = 54047402108928. Its totient is φ = 4865515776000.

The previous prime is 20355740455649. The next prime is 20355740455711. The reversal of 20355740455710 is 1755404755302.

It is a self number, because there is not a number n which added to its sum of digits gives 20355740455710.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20355740455711) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13192313199 + ... + 13192314741.

It is an arithmetic number, because the mean of its divisors is an integer number (211122664488).

Almost surely, 2^{20355740455710} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20355740455710, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27023701054464).

20355740455710 is an abundant number, since it is smaller than the sum of its proper divisors (33691661653218).

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

20355740455710 is a wasteful number, since it uses less digits than its factorization.

20355740455710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3059.

The product of its (nonzero) digits is 2940000, while the sum is 48.

The spelling of 20355740455710 in words is "twenty trillion, three hundred fifty-five billion, seven hundred forty million, four hundred fifty-five thousand, seven hundred ten".