71452434491 has 4 divisors (see below), whose sum is σ = 71458298184. Its totient is φ = 71446570800.

The previous prime is 71452434481. The next prime is 71452434503. The reversal of 71452434491 is 19443425417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19443425417 = 13 ⋅1495648109.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71452434491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71452434481) 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, 2913530 + ... + 2937951.

It is an arithmetic number, because the mean of its divisors is an integer number (17864574546).

Almost surely, 2^71452434491 is an apocalyptic number.

71452434491 is a deficient number, since it is larger than the sum of its proper divisors (5863693).

71452434491 is a wasteful number, since it uses less digits than its factorization.

71452434491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5863692.

The product of its digits is 483840, while the sum is 44.

The spelling of 71452434491 in words is "seventy-one billion, four hundred fifty-two million, four hundred thirty-four thousand, four hundred ninety-one".