71950645534 has 4 divisors (see below), whose sum is σ = 107925968304. Its totient is φ = 35975322766.

The previous prime is 71950645451. The next prime is 71950645541. The reversal of 71950645534 is 43554605917.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17987661382 + ... + 17987661385.

It is an arithmetic number, because the mean of its divisors is an integer number (26981492076).

Almost surely, 2^71950645534 is an apocalyptic number.

71950645534 is a deficient number, since it is larger than the sum of its proper divisors (35975322770).

71950645534 is a wasteful number, since it uses less digits than its factorization.

71950645534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35975322769.

The product of its (nonzero) digits is 2268000, while the sum is 49.

The spelling of 71950645534 in words is "seventy-one billion, nine hundred fifty million, six hundred forty-five thousand, five hundred thirty-four".