75678426636 has 12 divisors (see below), whose sum is σ = 176582995512. Its totient is φ = 25226142208.

The previous prime is 75678426613. The next prime is 75678426641. The reversal of 75678426636 is 63662487657.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 75678426636.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3153267765 + ... + 3153267788.

It is an arithmetic number, because the mean of its divisors is an integer number (14715249626).

Almost surely, 2^75678426636 is an apocalyptic number.

It is an amenable number.

75678426636 is an abundant number, since it is smaller than the sum of its proper divisors (100904568876).

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

75678426636 is a wasteful number, since it uses less digits than its factorization.

75678426636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6306535560 (or 6306535558 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 60.

The spelling of 75678426636 in words is "seventy-five billion, six hundred seventy-eight million, four hundred twenty-six thousand, six hundred thirty-six".