71526434542 has 16 divisors (see below), whose sum is σ = 113837996160. Its totient is φ = 33589220608.

The previous prime is 71526434537. The next prime is 71526434579. The reversal of 71526434542 is 24543462517.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2179663 + ... + 2212234.

It is an arithmetic number, because the mean of its divisors is an integer number (7114874760).

Almost surely, 2^71526434542 is an apocalyptic number.

71526434542 is a deficient number, since it is larger than the sum of its proper divisors (42311561618).

71526434542 is a wasteful number, since it uses less digits than its factorization.

71526434542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4392395.

The product of its digits is 806400, while the sum is 43.

The spelling of 71526434542 in words is "seventy-one billion, five hundred twenty-six million, four hundred thirty-four thousand, five hundred forty-two".