71387544607 has 2 divisors, whose sum is σ = 71387544608. Its totient is φ = 71387544606.

The previous prime is 71387544581. The next prime is 71387544611. The reversal of 71387544607 is 70644578317.

It is a strong prime.

It is an emirp because it is prime and its reverse (70644578317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71387544607 - 2¹⁹ = 71387020319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71387574607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35693772303 + 35693772304.

It is an arithmetic number, because the mean of its divisors is an integer number (35693772304).

Almost surely, 2^71387544607 is an apocalyptic number.

71387544607 is a deficient number, since it is larger than the sum of its proper divisors (1).

71387544607 is an equidigital number, since it uses as much as digits as its factorization.

71387544607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3951360, while the sum is 52.

The spelling of 71387544607 in words is "seventy-one billion, three hundred eighty-seven million, five hundred forty-four thousand, six hundred seven".