78009318133 has 4 divisors (see below), whose sum is σ = 78114879520. Its totient is φ = 77903756748.

The previous prime is 78009318119. The next prime is 78009318199. The reversal of 78009318133 is 33181390087.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78009318133 - 2¹³ = 78009309941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78009318133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78009318103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52779585 + ... + 52781062.

It is an arithmetic number, because the mean of its divisors is an integer number (19528719880).

Almost surely, 2^78009318133 is an apocalyptic number.

It is an amenable number.

78009318133 is a deficient number, since it is larger than the sum of its proper divisors (105561387).

78009318133 is a wasteful number, since it uses less digits than its factorization.

78009318133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105561386.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 78009318133 in words is "seventy-eight billion, nine million, three hundred eighteen thousand, one hundred thirty-three".