71786430436 has 12 divisors (see below), whose sum is σ = 143572860928. Its totient is φ = 30765613032.

The previous prime is 71786430409. The next prime is 71786430449. The reversal of 71786430436 is 63403468717.

71786430436 is an admirable number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 71786430436.

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 3 ways as a sum of consecutive naturals, for example, 1281900516 + ... + 1281900571.

Almost surely, 2^71786430436 is an apocalyptic number.

It is an amenable number.

71786430436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

71786430436 is a wasteful number, since it uses less digits than its factorization.

71786430436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2563801098 (or 2563801096 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 49.

The spelling of 71786430436 in words is "seventy-one billion, seven hundred eighty-six million, four hundred thirty thousand, four hundred thirty-six".