78255328725702 has 96 divisors (see below), whose sum is σ = 179007425625600. Its totient is φ = 24681324822336.

The previous prime is 78255328725671. The next prime is 78255328725713. The reversal of 78255328725702 is 20752782355287.

78255328725702 is a `hidden beast` number, since 7 + 8 + 2 + 5 + 53 + 2 + 8 + 7 + 2 + 570 + 2 = 666.

It is a super-2 number, since 2×78255328725702² (a number of 29 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 78255328725702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8832952 + ... + 15314427.

It is an arithmetic number, because the mean of its divisors is an integer number (1864660683600).

Almost surely, 2^{78255328725702} is an apocalyptic number.

78255328725702 is an abundant number, since it is smaller than the sum of its proper divisors (100752096899898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78255328725702 is a wasteful number, since it uses less digits than its factorization.

78255328725702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24147562 (or 24147559 counting only the distinct ones).

The product of its (nonzero) digits is 131712000, while the sum is 63.

The spelling of 78255328725702 in words is "seventy-eight trillion, two hundred fifty-five billion, three hundred twenty-eight million, seven hundred twenty-five thousand, seven hundred two".