71544430453 has 16 divisors (see below), whose sum is σ = 79059805056. Its totient is φ = 64397470720.

The previous prime is 71544430439. The next prime is 71544430457. The reversal of 71544430453 is 35403444517.

It is a cyclic number.

It is not a de Polignac number, because 71544430453 - 2²⁹ = 71007559541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71544430457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3148350 + ... + 3170992.

It is an arithmetic number, because the mean of its divisors is an integer number (4941237816).

Almost surely, 2^71544430453 is an apocalyptic number.

It is an amenable number.

71544430453 is a deficient number, since it is larger than the sum of its proper divisors (7515374603).

71544430453 is a wasteful number, since it uses less digits than its factorization.

71544430453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30764.

The product of its (nonzero) digits is 403200, while the sum is 40.

The spelling of 71544430453 in words is "seventy-one billion, five hundred forty-four million, four hundred thirty thousand, four hundred fifty-three".