71504397934 has 4 divisors (see below), whose sum is σ = 107256596904. Its totient is φ = 35752198966.

The previous prime is 71504397929. The next prime is 71504397947. The reversal of 71504397934 is 43979340517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43979340517 = 7 ⋅6282762931.

It is a super-2 number, since 2×71504397934² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17876099482 + ... + 17876099485.

It is an arithmetic number, because the mean of its divisors is an integer number (26814149226).

Almost surely, 2^71504397934 is an apocalyptic number.

71504397934 is a deficient number, since it is larger than the sum of its proper divisors (35752198970).

71504397934 is a wasteful number, since it uses less digits than its factorization.

71504397934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35752198969.

The product of its (nonzero) digits is 2857680, while the sum is 52.

The spelling of 71504397934 in words is "seventy-one billion, five hundred four million, three hundred ninety-seven thousand, nine hundred thirty-four".