71745543086 has 32 divisors (see below), whose sum is σ = 127985806080. Its totient is φ = 29523969216.

The previous prime is 71745543083. The next prime is 71745543091. The reversal of 71745543086 is 68034554717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71745543083) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 974471 + ... + 1045506.

It is an arithmetic number, because the mean of its divisors is an integer number (3999556440).

Almost surely, 2^71745543086 is an apocalyptic number.

71745543086 is a deficient number, since it is larger than the sum of its proper divisors (56240262994).

71745543086 is a wasteful number, since it uses less digits than its factorization.

71745543086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020088.

The product of its (nonzero) digits is 2822400, while the sum is 50.

The spelling of 71745543086 in words is "seventy-one billion, seven hundred forty-five million, five hundred forty-three thousand, eighty-six".