78352381986135 has 16 divisors (see below), whose sum is σ = 130814411664384. Its totient is φ = 39971070230432.

The previous prime is 78352381986133. The next prime is 78352381986167. The reversal of 78352381986135 is 53168918325387.

It is a cyclic number.

It is not a de Polignac number, because 78352381986135 - 2¹ = 78352381986133 is a prime.

It is a super-2 number, since 2×78352381986135² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a self number, because there is not a number n which added to its sum of digits gives 78352381986135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78352381986133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113554176447 + ... + 113554177136.

It is an arithmetic number, because the mean of its divisors is an integer number (8175900729024).

Almost surely, 2^{78352381986135} is an apocalyptic number.

78352381986135 is a deficient number, since it is larger than the sum of its proper divisors (52462029678249).

78352381986135 is a wasteful number, since it uses less digits than its factorization.

78352381986135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227108353614.

The product of its digits is 261273600, while the sum is 69.

The spelling of 78352381986135 in words is "seventy-eight trillion, three hundred fifty-two billion, three hundred eighty-one million, nine hundred eighty-six thousand, one hundred thirty-five".