78175410476878 has 128 divisors (see below), whose sum is σ = 143560450252800. Its totient is φ = 31442022720000.

The previous prime is 78175410476869. The next prime is 78175410476929. The reversal of 78175410476878 is 87867401457187.

It is a super-2 number, since 2×78175410476878² (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 78175410476878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 467145676 + ... + 467312992.

It is an arithmetic number, because the mean of its divisors is an integer number (1121566017600).

Almost surely, 2^{78175410476878} is an apocalyptic number.

78175410476878 is a deficient number, since it is larger than the sum of its proper divisors (65385039775922).

78175410476878 is a wasteful number, since it uses less digits than its factorization.

78175410476878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167874.

The product of its (nonzero) digits is 590069760, while the sum is 73.

The spelling of 78175410476878 in words is "seventy-eight trillion, one hundred seventy-five billion, four hundred ten million, four hundred seventy-six thousand, eight hundred seventy-eight".