20413782733455 has 20 divisors (see below), whose sum is σ = 36593595715512. Its totient is φ = 10887350790960.

The previous prime is 20413782733447. The next prime is 20413782733489. The reversal of 20413782733455 is 55433728731402.

It is a happy number.

20413782733455 is a `hidden beast` number, since 2 + 0 + 4 + 137 + 8 + 27 + 33 + 455 = 666.

It is not a de Polignac number, because 20413782733455 - 2³ = 20413782733447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25202200501 + ... + 25202201310.

Almost surely, 2^{20413782733455} is an apocalyptic number.

20413782733455 is a deficient number, since it is larger than the sum of its proper divisors (16179812982057).

20413782733455 is an equidigital number, since it uses as much as digits as its factorization.

20413782733455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50404401828 (or 50404401819 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 54.

The spelling of 20413782733455 in words is "twenty trillion, four hundred thirteen billion, seven hundred eighty-two million, seven hundred thirty-three thousand, four hundred fifty-five".