78786064990125 has 96 divisors (see below), whose sum is σ = 143528694682464. Its totient is φ = 41574597120000.

The previous prime is 78786064990097. The next prime is 78786064990151. The reversal of 78786064990125 is 52109946068787.

78786064990125 is a `hidden beast` number, since 7 + 8 + 7 + 8 + 6 + 0 + 6 + 499 + 0 + 125 = 666.

It can be written as a sum of positive squares in 16 ways, for example, as 76328651337129 + 2457413652996 = 8736627^2 + 1567614^2 .

It is not a de Polignac number, because 78786064990125 - 2⁸ = 78786064989869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 403774087 + ... + 403969163.

It is an arithmetic number, because the mean of its divisors is an integer number (1495090569609).

Almost surely, 2^{78786064990125} is an apocalyptic number.

78786064990125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78786064990125 is a deficient number, since it is larger than the sum of its proper divisors (64742629692339).

78786064990125 is a wasteful number, since it uses less digits than its factorization.

78786064990125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198896 (or 198883 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 72.

The spelling of 78786064990125 in words is "seventy-eight trillion, seven hundred eighty-six billion, sixty-four million, nine hundred ninety thousand, one hundred twenty-five".