78941227005 has 12 divisors (see below), whose sum is σ = 136831460220. Its totient is φ = 42101987712.

The previous prime is 78941226919. The next prime is 78941227061. The reversal of 78941227005 is 50072214987.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52699170969 + 26242056036 = 229563^2 + 161994^2 .

It is not a de Polignac number, because 78941227005 - 2⁹ = 78941226493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1754249489 = 78941227005 / (7 + 8 + 9 + 4 + 1 + 2 + 2 + 7 + 0 + 0 + 5).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 877124700 + ... + 877124789.

It is an arithmetic number, because the mean of its divisors is an integer number (11402621685).

Almost surely, 2^78941227005 is an apocalyptic number.

It is an amenable number.

78941227005 is a deficient number, since it is larger than the sum of its proper divisors (57890233215).

78941227005 is a wasteful number, since it uses less digits than its factorization.

78941227005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754249500 (or 1754249497 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 78941227005 in words is "seventy-eight billion, nine hundred forty-one million, two hundred twenty-seven thousand, five".