71507857222 has 4 divisors (see below), whose sum is σ = 107261785836. Its totient is φ = 35753928610.

The previous prime is 71507857219. The next prime is 71507857271. The reversal of 71507857222 is 22275870517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22275870517 = 787 ⋅28304791.

It is a super-2 number, since 2×71507857222² (a number of 23 digits) contains 22 as substring.

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, 17876964304 + ... + 17876964307.

It is an arithmetic number, because the mean of its divisors is an integer number (26815446459).

Almost surely, 2^71507857222 is an apocalyptic number.

71507857222 is a deficient number, since it is larger than the sum of its proper divisors (35753928614).

71507857222 is a wasteful number, since it uses less digits than its factorization.

71507857222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35753928613.

The product of its (nonzero) digits is 548800, while the sum is 46.

The spelling of 71507857222 in words is "seventy-one billion, five hundred seven million, eight hundred fifty-seven thousand, two hundred twenty-two".