71242533487 has 2 divisors, whose sum is σ = 71242533488. Its totient is φ = 71242533486.

The previous prime is 71242533469. The next prime is 71242533517. The reversal of 71242533487 is 78433524217.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71242533487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71242533287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35621266743 + 35621266744.

It is an arithmetic number, because the mean of its divisors is an integer number (35621266744).

Almost surely, 2^71242533487 is an apocalyptic number.

71242533487 is a deficient number, since it is larger than the sum of its proper divisors (1).

71242533487 is an equidigital number, since it uses as much as digits as its factorization.

71242533487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 46.

The spelling of 71242533487 in words is "seventy-one billion, two hundred forty-two million, five hundred thirty-three thousand, four hundred eighty-seven".