78506655564106 has 32 divisors (see below), whose sum is σ = 146833361815680. Its totient is φ = 30583733611200.

The previous prime is 78506655564059. The next prime is 78506655564119. The reversal of 78506655564106 is 60146555660587.

It is a super-2 number, since 2×78506655564106² (a number of 29 digits) contains 22 as substring.

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, 25848901 + ... + 28725928.

It is an arithmetic number, because the mean of its divisors is an integer number (4588542556740).

Almost surely, 2^{78506655564106} is an apocalyptic number.

78506655564106 is a deficient number, since it is larger than the sum of its proper divisors (68326706251574).

78506655564106 is a wasteful number, since it uses less digits than its factorization.

78506655564106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54584190.

The product of its (nonzero) digits is 181440000, while the sum is 64.

The spelling of 78506655564106 in words is "seventy-eight trillion, five hundred six billion, six hundred fifty-five million, five hundred sixty-four thousand, one hundred six".