20541423051 has 48 divisors (see below), whose sum is σ = 33238576800. Its totient is φ = 12148061184.

The previous prime is 20541423043. The next prime is 20541423083. The reversal of 20541423051 is 15032414502.

20541423051 is a `hidden beast` number, since 2 + 0 + 541 + 42 + 30 + 51 = 666.

It is not a de Polignac number, because 20541423051 - 2³ = 20541423043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20541423031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 554745 + ... + 590613.

It is an arithmetic number, because the mean of its divisors is an integer number (692470350).

Almost surely, 2^20541423051 is an apocalyptic number.

20541423051 is a deficient number, since it is larger than the sum of its proper divisors (12697153749).

20541423051 is a wasteful number, since it uses less digits than its factorization.

20541423051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36108 (or 36105 counting only the distinct ones).

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

Adding to 20541423051 its reverse (15032414502), we get a palindrome (35573837553).

The spelling of 20541423051 in words is "twenty billion, five hundred forty-one million, four hundred twenty-three thousand, fifty-one".