71849605890 has 32 divisors (see below), whose sum is σ = 172502856576. Its totient is φ = 19152805760.

The previous prime is 71849605889. The next prime is 71849605903. The reversal of 71849605890 is 9850694817.

It is a self number, because there is not a number n which added to its sum of digits gives 71849605890.

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 in 15 ways as a sum of consecutive naturals, for example, 360387 + ... + 523046.

It is an arithmetic number, because the mean of its divisors is an integer number (5390714268).

Almost surely, 2^71849605890 is an apocalyptic number.

71849605890 is an abundant number, since it is smaller than the sum of its proper divisors (100653250686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71849605890 is a wasteful number, since it uses less digits than its factorization.

71849605890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886154.

The product of its (nonzero) digits is 4354560, while the sum is 57.

The spelling of 71849605890 in words is "seventy-one billion, eight hundred forty-nine million, six hundred five thousand, eight hundred ninety".