78109227365 has 16 divisors (see below), whose sum is σ = 100950060288. Its totient is φ = 57675571776.

The previous prime is 78109227347. The next prime is 78109227379. The reversal of 78109227365 is 56372290187.

It is a cyclic number.

It is not a de Polignac number, because 78109227365 - 2¹⁴ = 78109210981 is a prime.

It is a super-2 number, since 2×78109227365² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 792404 + ... + 885506.

It is an arithmetic number, because the mean of its divisors is an integer number (6309378768).

Almost surely, 2^78109227365 is an apocalyptic number.

It is an amenable number.

78109227365 is a deficient number, since it is larger than the sum of its proper divisors (22840832923).

78109227365 is a wasteful number, since it uses less digits than its factorization.

78109227365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106028.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 78109227365 in words is "seventy-eight billion, one hundred nine million, two hundred twenty-seven thousand, three hundred sixty-five".