78540180776125 has 8 divisors (see below), whose sum is σ = 98018145608760. Its totient is φ = 62832144620800.

The previous prime is 78540180776117. The next prime is 78540180776149. The reversal of 78540180776125 is 52167708104587.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 316875548889 + 78223305227236 = 562917^2 + 8844394^2 .

It is not a de Polignac number, because 78540180776125 - 2³ = 78540180776117 is a prime.

It is a congruent number.

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, 314160722980 + ... + 314160723229.

It is an arithmetic number, because the mean of its divisors is an integer number (12252268201095).

Almost surely, 2^{78540180776125} is an apocalyptic number.

It is an amenable number.

78540180776125 is a deficient number, since it is larger than the sum of its proper divisors (19477964832635).

78540180776125 is an equidigital number, since it uses as much as digits as its factorization.

78540180776125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628321446224 (or 628321446214 counting only the distinct ones).

The product of its (nonzero) digits is 26342400, while the sum is 61.

The spelling of 78540180776125 in words is "seventy-eight trillion, five hundred forty billion, one hundred eighty million, seven hundred seventy-six thousand, one hundred twenty-five".