8138775558012 has 24 divisors (see below), whose sum is σ = 20716883238912. Its totient is φ = 2466295623600.

The previous prime is 8138775557933. The next prime is 8138775558013. The reversal of 8138775558012 is 2108555778318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8138775558013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30828695164 + ... + 30828695427.

It is an arithmetic number, because the mean of its divisors is an integer number (863203468288).

Almost surely, 2^{8138775558012} is an apocalyptic number.

It is an amenable number.

8138775558012 is an abundant number, since it is smaller than the sum of its proper divisors (12578107680900).

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

8138775558012 is a wasteful number, since it uses less digits than its factorization.

8138775558012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61657390609 (or 61657390607 counting only the distinct ones).

The product of its (nonzero) digits is 18816000, while the sum is 60.

The spelling of 8138775558012 in words is "eight trillion, one hundred thirty-eight billion, seven hundred seventy-five million, five hundred fifty-eight thousand, twelve".