128167318234 has 4 divisors (see below), whose sum is σ = 192250977354. Its totient is φ = 64083659116.

The previous prime is 128167318219. The next prime is 128167318241. The reversal of 128167318234 is 432813761821.

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

It can be written as a sum of positive squares in only one way, i.e., 121086600625 + 7080717609 = 347975^2 + 84147^2 .

It is a super-2 number, since 2×128167318234² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32041829557 + ... + 32041829560.

Almost surely, 2^128167318234 is an apocalyptic number.

128167318234 is a deficient number, since it is larger than the sum of its proper divisors (64083659120).

128167318234 is an equidigital number, since it uses as much as digits as its factorization.

128167318234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64083659119.

The product of its digits is 387072, while the sum is 46.

The spelling of 128167318234 in words is "one hundred twenty-eight billion, one hundred sixty-seven million, three hundred eighteen thousand, two hundred thirty-four".