20523232547 has 2 divisors, whose sum is σ = 20523232548. Its totient is φ = 20523232546.

The previous prime is 20523232417. The next prime is 20523232567. The reversal of 20523232547 is 74523232502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20523232547 - 2²⁰ = 20522183971 is a prime.

It is a super-3 number, since 3×20523232547³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20523232567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261616273 + 10261616274.

It is an arithmetic number, because the mean of its divisors is an integer number (10261616274).

Almost surely, 2^20523232547 is an apocalyptic number.

20523232547 is a deficient number, since it is larger than the sum of its proper divisors (1).

20523232547 is an equidigital number, since it uses as much as digits as its factorization.

20523232547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 35.

The spelling of 20523232547 in words is "twenty billion, five hundred twenty-three million, two hundred thirty-two thousand, five hundred forty-seven".