78743419105 has 8 divisors (see below), whose sum is σ = 101760726312. Its totient is φ = 58148986368.

The previous prime is 78743419061. The next prime is 78743419133. The reversal of 78743419105 is 50191434787.

It can be written as a sum of positive squares in 4 ways, for example, as 2027160576 + 76716258529 = 45024^2 + 276977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78743419105 - 2¹⁷ = 78743288033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605718544 + ... + 605718673.

It is an arithmetic number, because the mean of its divisors is an integer number (12720090789).

Almost surely, 2^78743419105 is an apocalyptic number.

It is an amenable number.

78743419105 is a deficient number, since it is larger than the sum of its proper divisors (23017307207).

78743419105 is a wasteful number, since it uses less digits than its factorization.

78743419105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211437235.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 78743419105 in words is "seventy-eight billion, seven hundred forty-three million, four hundred nineteen thousand, one hundred five".