71187009022 has 4 divisors (see below), whose sum is σ = 106780513536. Its totient is φ = 35593504510.

The previous prime is 71187009017. The next prime is 71187009031. The reversal of 71187009022 is 22090078117.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22090078117 = 23 ⋅960438179.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17796752254 + ... + 17796752257.

It is an arithmetic number, because the mean of its divisors is an integer number (26695128384).

Almost surely, 2^71187009022 is an apocalyptic number.

71187009022 is a deficient number, since it is larger than the sum of its proper divisors (35593504514).

71187009022 is a wasteful number, since it uses less digits than its factorization.

71187009022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35593504513.

The product of its (nonzero) digits is 14112, while the sum is 37.

The spelling of 71187009022 in words is "seventy-one billion, one hundred eighty-seven million, nine thousand, twenty-two".