71541504523 has 2 divisors, whose sum is σ = 71541504524. Its totient is φ = 71541504522.

The previous prime is 71541504371. The next prime is 71541504553. The reversal of 71541504523 is 32540514517.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71541504523 - 2²¹ = 71539407371 is a prime.

It is not a weakly prime, because it can be changed into another prime (71541504553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35770752261 + 35770752262.

It is an arithmetic number, because the mean of its divisors is an integer number (35770752262).

Almost surely, 2^71541504523 is an apocalyptic number.

71541504523 is a deficient number, since it is larger than the sum of its proper divisors (1).

71541504523 is an equidigital number, since it uses as much as digits as its factorization.

71541504523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84000, while the sum is 37.

The spelling of 71541504523 in words is "seventy-one billion, five hundred forty-one million, five hundred four thousand, five hundred twenty-three".