78255680755 has 8 divisors (see below), whose sum is σ = 107322076512. Its totient is φ = 53661038208.

The previous prime is 78255680753. The next prime is 78255680819. The reversal of 78255680755 is 55708655287.

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 78255680755 - 2¹ = 78255680753 is a prime.

It is a super-2 number, since 2×78255680755² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78255680755.

It is not an unprimeable number, because it can be changed into a prime (78255680753) 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, 1117938262 + ... + 1117938331.

It is an arithmetic number, because the mean of its divisors is an integer number (13415259564).

Almost surely, 2^78255680755 is an apocalyptic number.

78255680755 is a deficient number, since it is larger than the sum of its proper divisors (29066395757).

78255680755 is a wasteful number, since it uses less digits than its factorization.

78255680755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235876605.

The product of its (nonzero) digits is 23520000, while the sum is 58.

The spelling of 78255680755 in words is "seventy-eight billion, two hundred fifty-five million, six hundred eighty thousand, seven hundred fifty-five".