20540345112 has 48 divisors (see below), whose sum is σ = 63577260240. Its totient is φ = 5868669888.

The previous prime is 20540345101. The next prime is 20540345129. The reversal of 20540345112 is 21154304502.

20540345112 is a `hidden beast` number, since 2 + 0 + 540 + 3 + 4 + 5 + 112 = 666.

It is a super-3 number, since 3×20540345112³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20376823 + ... + 20377830.

It is an arithmetic number, because the mean of its divisors is an integer number (1324526255).

Almost surely, 2^20540345112 is an apocalyptic number.

It is an amenable number.

20540345112 is an abundant number, since it is smaller than the sum of its proper divisors (43036915128).

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

20540345112 is a wasteful number, since it uses less digits than its factorization.

20540345112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40754672 (or 40754665 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 20540345112 its reverse (21154304502), we get a palindrome (41694649614).

The spelling of 20540345112 in words is "twenty billion, five hundred forty million, three hundred forty-five thousand, one hundred twelve".