128277308322 has 12 divisors (see below), whose sum is σ = 277934168070. Its totient is φ = 42759102768.

The previous prime is 128277308303. The next prime is 128277308329. The reversal of 128277308322 is 223803772821.

128277308322 is a `hidden beast` number, since 1 + 28 + 277 + 30 + 8 + 322 = 666.

It can be written as a sum of positive squares in only one way, i.e., 87510064041 + 40767244281 = 295821^2 + 201909^2 .

It is not an unprimeable number, because it can be changed into a prime (128277308329) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3563258547 + ... + 3563258582.

Almost surely, 2^128277308322 is an apocalyptic number.

128277308322 is an abundant number, since it is smaller than the sum of its proper divisors (149656859748).

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

128277308322 is a wasteful number, since it uses less digits than its factorization.

128277308322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7126517137 (or 7126517134 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 128277308322 in words is "one hundred twenty-eight billion, two hundred seventy-seven million, three hundred eight thousand, three hundred twenty-two".