71408536542 has 24 divisors (see below), whose sum is σ = 176821138416. Its totient is φ = 20402438976.

The previous prime is 71408536519. The next prime is 71408536553. The reversal of 71408536542 is 24563580417.

71408536542 is a `hidden beast` number, since 71 + 4 + 0 + 8 + 5 + 36 + 542 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283367083 + ... + 283367334.

It is an arithmetic number, because the mean of its divisors is an integer number (7367547434).

Almost surely, 2^71408536542 is an apocalyptic number.

71408536542 is an abundant number, since it is smaller than the sum of its proper divisors (105412601874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71408536542 is a wasteful number, since it uses less digits than its factorization.

71408536542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566734432 (or 566734429 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 71408536542 in words is "seventy-one billion, four hundred eight million, five hundred thirty-six thousand, five hundred forty-two".