128318766110612 has 72 divisors (see below), whose sum is σ = 284970100530528. Its totient is φ = 49993894440000.

The previous prime is 128318766110599. The next prime is 128318766110747. The reversal of 128318766110612 is 216011667813821.

It is a super-2 number, since 2×128318766110612² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 384681443 + ... + 385014869.

It is an arithmetic number, because the mean of its divisors is an integer number (3957918062924).

Almost surely, 2^{128318766110612} is an apocalyptic number.

It is an amenable number.

128318766110612 is an abundant number, since it is smaller than the sum of its proper divisors (156651334419916).

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

128318766110612 is a wasteful number, since it uses less digits than its factorization.

128318766110612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511957 (or 511948 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 53.

The spelling of 128318766110612 in words is "one hundred twenty-eight trillion, three hundred eighteen billion, seven hundred sixty-six million, one hundred ten thousand, six hundred twelve".