71871878590 has 16 divisors (see below), whose sum is σ = 129616751088. Its totient is φ = 28693780416.

The previous prime is 71871878579. The next prime is 71871878633. The reversal of 71871878590 is 9587817817.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6865887 + ... + 6876346.

It is an arithmetic number, because the mean of its divisors is an integer number (8101046943).

Almost surely, 2^71871878590 is an apocalyptic number.

71871878590 is a deficient number, since it is larger than the sum of its proper divisors (57744872498).

71871878590 is a wasteful number, since it uses less digits than its factorization.

71871878590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13742763.

The product of its (nonzero) digits is 7902720, while the sum is 61.

The spelling of 71871878590 in words is "seventy-one billion, eight hundred seventy-one million, eight hundred seventy-eight thousand, five hundred ninety".