20905445114740 has 48 divisors (see below), whose sum is σ = 44532355271040. Its totient is φ = 8242069324160.

The previous prime is 20905445114597. The next prime is 20905445114747. The reversal of 20905445114740 is 4741154450902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20905445114747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2945394 + ... + 7105366.

It is an arithmetic number, because the mean of its divisors is an integer number (927757401480).

Almost surely, 2^{20905445114740} is an apocalyptic number.

20905445114740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20905445114740 is an abundant number, since it is smaller than the sum of its proper divisors (23626910156300).

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

20905445114740 is a wasteful number, since it uses less digits than its factorization.

20905445114740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4163592 (or 4163590 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 20905445114740 in words is "twenty trillion, nine hundred five billion, four hundred forty-five million, one hundred fourteen thousand, seven hundred forty".