71381573890 has 32 divisors (see below), whose sum is σ = 140624092224. Its totient is φ = 25872373440.

The previous prime is 71381573873. The next prime is 71381573909. The reversal of 71381573890 is 9837518317.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1023109 + ... + 1090648.

It is an arithmetic number, because the mean of its divisors is an integer number (4394502882).

Almost surely, 2^71381573890 is an apocalyptic number.

71381573890 is a deficient number, since it is larger than the sum of its proper divisors (69242518334).

71381573890 is a wasteful number, since it uses less digits than its factorization.

71381573890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114082.

The product of its (nonzero) digits is 1270080, while the sum is 52.

The spelling of 71381573890 in words is "seventy-one billion, three hundred eighty-one million, five hundred seventy-three thousand, eight hundred ninety".