78504135126826 has 32 divisors (see below), whose sum is σ = 127485867382272. Its totient is φ = 36119907490560.

The previous prime is 78504135126773. The next prime is 78504135126883. The reversal of 78504135126826 is 62862153140587.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112981666 + ... + 113674381.

It is an arithmetic number, because the mean of its divisors is an integer number (3983933355696).

Almost surely, 2^{78504135126826} is an apocalyptic number.

78504135126826 is a deficient number, since it is larger than the sum of its proper divisors (48981732255446).

78504135126826 is a wasteful number, since it uses less digits than its factorization.

78504135126826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226656294.

The product of its (nonzero) digits is 19353600, while the sum is 58.

The spelling of 78504135126826 in words is "seventy-eight trillion, five hundred four billion, one hundred thirty-five million, one hundred twenty-six thousand, eight hundred twenty-six".