78507188532258 has 16 divisors (see below), whose sum is σ = 157015406338176. Its totient is φ = 26168891298480.

The previous prime is 78507188532233. The next prime is 78507188532301. The reversal of 78507188532258 is 85223588170587.

It is a junction number, because it is equal to n+sod(n) for n = 78507188532192 and 78507188532201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41893066 + ... + 43726917.

It is an arithmetic number, because the mean of its divisors is an integer number (9813462896136).

Almost surely, 2^{78507188532258} is an apocalyptic number.

78507188532258 is an abundant number, since it is smaller than the sum of its proper divisors (78508217805918).

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

78507188532258 is a wasteful number, since it uses less digits than its factorization.

78507188532258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85772809.

The product of its (nonzero) digits is 301056000, while the sum is 69.

The spelling of 78507188532258 in words is "seventy-eight trillion, five hundred seven billion, one hundred eighty-eight million, five hundred thirty-two thousand, two hundred fifty-eight".