78282755805 has 8 divisors (see below), whose sum is σ = 125252409312. Its totient is φ = 41750803088.

The previous prime is 78282755801. The next prime is 78282755911. The reversal of 78282755805 is 50855728287.

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 78282755805 - 2² = 78282755801 is a prime.

It is a super-2 number, since 2×78282755805² (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 (78282755801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2609425179 + ... + 2609425208.

It is an arithmetic number, because the mean of its divisors is an integer number (15656551164).

Almost surely, 2^78282755805 is an apocalyptic number.

It is an amenable number.

78282755805 is a deficient number, since it is larger than the sum of its proper divisors (46969653507).

78282755805 is a wasteful number, since it uses less digits than its factorization.

78282755805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5218850395.

The product of its (nonzero) digits is 12544000, while the sum is 57.

The spelling of 78282755805 in words is "seventy-eight billion, two hundred eighty-two million, seven hundred fifty-five thousand, eight hundred five".