78504134884813 has 16 divisors (see below), whose sum is σ = 86006644304832. Its totient is φ = 71062957728000.

The previous prime is 78504134884787. The next prime is 78504134884841. The reversal of 78504134884813 is 31848843140587.

It is a cyclic number.

It is not a de Polignac number, because 78504134884813 - 2²⁵ = 78504101330381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78504134884873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5027778 + ... + 13501363.

It is an arithmetic number, because the mean of its divisors is an integer number (5375415269052).

Almost surely, 2^{78504134884813} is an apocalyptic number.

It is an amenable number.

78504134884813 is a deficient number, since it is larger than the sum of its proper divisors (7502509420019).

78504134884813 is a wasteful number, since it uses less digits than its factorization.

78504134884813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18530796.

The product of its (nonzero) digits is 82575360, while the sum is 64.

The spelling of 78504134884813 in words is "seventy-eight trillion, five hundred four billion, one hundred thirty-four million, eight hundred eighty-four thousand, eight hundred thirteen".