71454163139 has 4 divisors (see below), whose sum is σ = 75657349224. Its totient is φ = 67250977056.

The previous prime is 71454163049. The next prime is 71454163141. The reversal of 71454163139 is 93136145417.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71454163139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71454163139.

It is not an unprimeable number, because it can be changed into a prime (71454163159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2101593017 + ... + 2101593050.

It is an arithmetic number, because the mean of its divisors is an integer number (18914337306).

Almost surely, 2^71454163139 is an apocalyptic number.

71454163139 is a deficient number, since it is larger than the sum of its proper divisors (4203186085).

71454163139 is a wasteful number, since it uses less digits than its factorization.

71454163139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4203186084.

The product of its digits is 272160, while the sum is 44.

The spelling of 71454163139 in words is "seventy-one billion, four hundred fifty-four million, one hundred sixty-three thousand, one hundred thirty-nine".