20541525043 has 16 divisors (see below), whose sum is σ = 23455948320. Its totient is φ = 17832289536.

The previous prime is 20541525031. The next prime is 20541525077. The reversal of 20541525043 is 34052514502.

It is a cyclic number.

It is not a de Polignac number, because 20541525043 - 2²¹ = 20539427891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20541524996 and 20541525014.

It is not an unprimeable number, because it can be changed into a prime (20541525013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269680 + ... + 337357.

It is an arithmetic number, because the mean of its divisors is an integer number (1465996770).

Almost surely, 2^20541525043 is an apocalyptic number.

20541525043 is a deficient number, since it is larger than the sum of its proper divisors (2914423277).

20541525043 is a wasteful number, since it uses less digits than its factorization.

20541525043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607206.

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 20541525043 in words is "twenty billion, five hundred forty-one million, five hundred twenty-five thousand, forty-three".