71464321818 has 40 divisors (see below), whose sum is σ = 160159839840. Its totient is φ = 23817450600.

The previous prime is 71464321807. The next prime is 71464321937. The reversal of 71464321818 is 81812346417.

71464321818 is a `hidden beast` number, since 7 + 1 + 464 + 3 + 2 + 181 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1027593 + ... + 1094931.

It is an arithmetic number, because the mean of its divisors is an integer number (4003995996).

Almost surely, 2^71464321818 is an apocalyptic number.

71464321818 is an abundant number, since it is smaller than the sum of its proper divisors (88695518022).

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

71464321818 is a wasteful number, since it uses less digits than its factorization.

71464321818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73904 (or 73895 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The spelling of 71464321818 in words is "seventy-one billion, four hundred sixty-four million, three hundred twenty-one thousand, eight hundred eighteen".