78518525926 has 4 divisors (see below), whose sum is σ = 117777788892. Its totient is φ = 39259262962.

The previous prime is 78518525903. The next prime is 78518525927. The reversal of 78518525926 is 62952581587.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78518525927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19629631480 + ... + 19629631483.

It is an arithmetic number, because the mean of its divisors is an integer number (29444447223).

Almost surely, 2^78518525926 is an apocalyptic number.

78518525926 is a deficient number, since it is larger than the sum of its proper divisors (39259262966).

78518525926 is a wasteful number, since it uses less digits than its factorization.

78518525926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39259262965.

The product of its digits is 12096000, while the sum is 58.

The spelling of 78518525926 in words is "seventy-eight billion, five hundred eighteen million, five hundred twenty-five thousand, nine hundred twenty-six".