71434573739 has 4 divisors (see below), whose sum is σ = 71550351624. Its totient is φ = 71318795856.

The previous prime is 71434573729. The next prime is 71434573781. The reversal of 71434573739 is 93737543417.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 71434573739 - 2³⁶ = 2715097003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71434573729) 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, 57888017 + ... + 57889250.

It is an arithmetic number, because the mean of its divisors is an integer number (17887587906).

Almost surely, 2^71434573739 is an apocalyptic number.

71434573739 is a deficient number, since it is larger than the sum of its proper divisors (115777885).

71434573739 is a wasteful number, since it uses less digits than its factorization.

71434573739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115777884.

The product of its digits is 6667920, while the sum is 53.

The spelling of 71434573739 in words is "seventy-one billion, four hundred thirty-four million, five hundred seventy-three thousand, seven hundred thirty-nine".