78218825620133 has 12 divisors (see below), whose sum is σ = 86545442455584. Its totient is φ = 70637109213000.

The previous prime is 78218825620069. The next prime is 78218825620231. The reversal of 78218825620133 is 33102652881287.

It is not a de Polignac number, because 78218825620133 - 2⁶ = 78218825620069 is a prime.

It is a super-2 number, since 2×78218825620133² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78218825620933) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2140500191 + ... + 2140536732.

It is an arithmetic number, because the mean of its divisors is an integer number (7212120204632).

Almost surely, 2^{78218825620133} is an apocalyptic number.

It is an amenable number.

78218825620133 is a deficient number, since it is larger than the sum of its proper divisors (8326616835451).

78218825620133 is a wasteful number, since it uses less digits than its factorization.

78218825620133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281037096 (or 4281037085 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 78218825620133 in words is "seventy-eight trillion, two hundred eighteen billion, eight hundred twenty-five million, six hundred twenty thousand, one hundred thirty-three".