20105451135 has 96 divisors (see below), whose sum is σ = 43486110720. Its totient is φ = 8348313600.

The previous prime is 20105451101. The next prime is 20105451139. The reversal of 20105451135 is 53115450102.

20105451135 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 545 + 113 + 5 = 666.

It is not a de Polignac number, because 20105451135 - 2⁶ = 20105451071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20105451099 and 20105451108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20105451139) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6342831 + ... + 6345999.

It is an arithmetic number, because the mean of its divisors is an integer number (452980320).

Almost surely, 2^20105451135 is an apocalyptic number.

20105451135 is an abundant number, since it is smaller than the sum of its proper divisors (23380659585).

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

20105451135 is a wasteful number, since it uses less digits than its factorization.

20105451135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029 (or 5026 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The spelling of 20105451135 in words is "twenty billion, one hundred five million, four hundred fifty-one thousand, one hundred thirty-five".