78126223858038 has 48 divisors (see below), whose sum is σ = 175544075266560. Its totient is φ = 26041896314856.

The previous prime is 78126223858037. The next prime is 78126223858049. The reversal of 78126223858038 is 83085832262187.

It is a happy number.

78126223858038 is a `hidden beast` number, since 7 + 8 + 1 + 26 + 2 + 23 + 8 + 580 + 3 + 8 = 666.

It is a super-2 number, since 2×78126223858038² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78126223858037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83788831 + ... + 84716117.

It is an arithmetic number, because the mean of its divisors is an integer number (3657168234720).

Almost surely, 2^{78126223858038} is an apocalyptic number.

78126223858038 is an abundant number, since it is smaller than the sum of its proper divisors (97417851408522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78126223858038 is a wasteful number, since it uses less digits than its factorization.

78126223858038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100663 (or 1100651 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 63.

The spelling of 78126223858038 in words is "seventy-eight trillion, one hundred twenty-six billion, two hundred twenty-three million, eight hundred fifty-eight thousand, thirty-eight".