20506155035411 has 8 divisors (see below), whose sum is σ = 20510919728640. Its totient is φ = 20501390871432.

The previous prime is 20506155035389. The next prime is 20506155035459. The reversal of 20506155035411 is 11453055160502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20506155035411 - 2⁶ = 20506155035347 is a prime.

It is a super-3 number, since 3×20506155035411³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20506155032411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83383916 + ... + 83629478.

It is an arithmetic number, because the mean of its divisors is an integer number (2563864966080).

Almost surely, 2^{20506155035411} is an apocalyptic number.

20506155035411 is a deficient number, since it is larger than the sum of its proper divisors (4764693229).

20506155035411 is a wasteful number, since it uses less digits than its factorization.

20506155035411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264625.

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 20506155035411 in words is "twenty trillion, five hundred six billion, one hundred fifty-five million, thirty-five thousand, four hundred eleven".