20202523540531 has 2 divisors, whose sum is σ = 20202523540532. Its totient is φ = 20202523540530.

The previous prime is 20202523540489. The next prime is 20202523540541. The reversal of 20202523540531 is 13504532520202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20202523540531 - 2¹⁹ = 20202523016243 is a prime.

It is a super-2 number, since 2×20202523540531² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20202523540541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101261770265 + 10101261770266.

It is an arithmetic number, because the mean of its divisors is an integer number (10101261770266).

Almost surely, 2^{20202523540531} is an apocalyptic number.

20202523540531 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202523540531 is an equidigital number, since it uses as much as digits as its factorization.

20202523540531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 34.

The spelling of 20202523540531 in words is "twenty trillion, two hundred two billion, five hundred twenty-three million, five hundred forty thousand, five hundred thirty-one".