78148189263 has 16 divisors (see below), whose sum is σ = 108798007680. Its totient is φ = 49832162016.

The previous prime is 78148189247. The next prime is 78148189291. The reversal of 78148189263 is 36298184187.

It is not a de Polignac number, because 78148189263 - 2⁴ = 78148189247 is a prime.

It is a super-2 number, since 2×78148189263² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78148189363) 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, 4188145 + ... + 4206762.

It is an arithmetic number, because the mean of its divisors is an integer number (6799875480).

Almost surely, 2^78148189263 is an apocalyptic number.

78148189263 is a deficient number, since it is larger than the sum of its proper divisors (30649818417).

78148189263 is a wasteful number, since it uses less digits than its factorization.

78148189263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8395046.

The product of its digits is 4644864, while the sum is 57.

The spelling of 78148189263 in words is "seventy-eight billion, one hundred forty-eight million, one hundred eighty-nine thousand, two hundred sixty-three".