20541235040000 has 90 divisors (see below), whose sum is σ = 51236388107520. Its totient is φ = 8216493952000.

The previous prime is 20541235039907. The next prime is 20541235040023. The reversal of 20541235040000 is 4053214502.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 64031360 + ... + 64351359.

Almost surely, 2^{20541235040000} is an apocalyptic number.

20541235040000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20541235040000 is an abundant number, since it is smaller than the sum of its proper divisors (30695153067520).

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

20541235040000 is an frugal number, since it uses more digits than its factorization.

20541235040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128382755 (or 128382726 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20541235040000 its reverse (4053214502), we get a palindrome (20545288254502).

The spelling of 20541235040000 in words is "twenty trillion, five hundred forty-one billion, two hundred thirty-five million, forty thousand".