71534540554 has 16 divisors (see below), whose sum is σ = 107720789760. Its totient is φ = 35627772960.

The previous prime is 71534540551. The next prime is 71534540563. The reversal of 71534540554 is 45504543517.

It is a self number, because there is not a number n which added to its sum of digits gives 71534540554.

It is not an unprimeable number, because it can be changed into a prime (71534540551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 861109 + ... + 940519.

It is an arithmetic number, because the mean of its divisors is an integer number (6732549360).

Almost surely, 2^71534540554 is an apocalyptic number.

71534540554 is a deficient number, since it is larger than the sum of its proper divisors (36186249206).

71534540554 is a wasteful number, since it uses less digits than its factorization.

71534540554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81165.

The product of its (nonzero) digits is 840000, while the sum is 43.

The spelling of 71534540554 in words is "seventy-one billion, five hundred thirty-four million, five hundred forty thousand, five hundred fifty-four".