20475542141 has 2 divisors, whose sum is σ = 20475542142. Its totient is φ = 20475542140.

The previous prime is 20475542117. The next prime is 20475542161. The reversal of 20475542141 is 14124557402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19467225625 + 1008316516 = 139525^2 + 31754^2 .

It is a cyclic number.

It is not a de Polignac number, because 20475542141 - 2⁶ = 20475542077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20475542161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10237771070 + 10237771071.

It is an arithmetic number, because the mean of its divisors is an integer number (10237771071).

Almost surely, 2^20475542141 is an apocalyptic number.

It is an amenable number.

20475542141 is a deficient number, since it is larger than the sum of its proper divisors (1).

20475542141 is an equidigital number, since it uses as much as digits as its factorization.

20475542141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44800, while the sum is 35.

The spelling of 20475542141 in words is "twenty billion, four hundred seventy-five million, five hundred forty-two thousand, one hundred forty-one".