20534454513 has 24 divisors (see below), whose sum is σ = 31437559296. Its totient is φ = 12871267200.

The previous prime is 20534454469. The next prime is 20534454539. The reversal of 20534454513 is 31545443502.

20534454513 is a `hidden beast` number, since 2 + 0 + 53 + 44 + 54 + 513 = 666.

It is not a de Polignac number, because 20534454513 - 2¹³ = 20534446321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20534454553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83908 + ... + 219338.

It is an arithmetic number, because the mean of its divisors is an integer number (1309898304).

Almost surely, 2^20534454513 is an apocalyptic number.

It is an amenable number.

20534454513 is a deficient number, since it is larger than the sum of its proper divisors (10903104783).

20534454513 is a wasteful number, since it uses less digits than its factorization.

20534454513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136445 (or 136442 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 20534454513 in words is "twenty billion, five hundred thirty-four million, four hundred fifty-four thousand, five hundred thirteen".