78341266214387 has 4 divisors (see below), whose sum is σ = 85463199506616. Its totient is φ = 71219332922160.

The previous prime is 78341266214371. The next prime is 78341266214417.

78341266214387 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78341266214387 - 2⁴ = 78341266214371 is a prime.

It is a super-2 number, since 2×78341266214387² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78341266217387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3560966646098 + ... + 3560966646119.

It is an arithmetic number, because the mean of its divisors is an integer number (21365799876654).

Almost surely, 2^{78341266214387} is an apocalyptic number.

78341266214387 is a deficient number, since it is larger than the sum of its proper divisors (7121933292229).

78341266214387 is a wasteful number, since it uses less digits than its factorization.

78341266214387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7121933292228.

The product of its digits is 65028096, while the sum is 62.

The spelling of 78341266214387 in words is "seventy-eight trillion, three hundred forty-one billion, two hundred sixty-six million, two hundred fourteen thousand, three hundred eighty-seven".