71584048531 has 2 divisors, whose sum is σ = 71584048532. Its totient is φ = 71584048530.

The previous prime is 71584048507. The next prime is 71584048537. The reversal of 71584048531 is 13584048517.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71584048531 is a prime.

It is a super-2 number, since 2×71584048531² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71584048537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35792024265 + 35792024266.

It is an arithmetic number, because the mean of its divisors is an integer number (35792024266).

Almost surely, 2^71584048531 is an apocalyptic number.

71584048531 is a deficient number, since it is larger than the sum of its proper divisors (1).

71584048531 is an equidigital number, since it uses as much as digits as its factorization.

71584048531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 537600, while the sum is 46.

The spelling of 71584048531 in words is "seventy-one billion, five hundred eighty-four million, forty-eight thousand, five hundred thirty-one".