67890229128 has 36 divisors (see below), whose sum is σ = 183875358615. Its totient is φ = 22629339408.

The previous prime is 67890229081. The next prime is 67890229133. The reversal of 67890229128 is 82192209876.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 33945114564 + 33945114564 = 184242^2 + 184242^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=184242.

It is a super-2 number, since 2×67890229128² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2195551 + ... + 2226257.

Almost surely, 2^67890229128 is an apocalyptic number.

It is an amenable number.

67890229128 is an abundant number, since it is smaller than the sum of its proper divisors (115985129487).

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

67890229128 is an frugal number, since it uses more digits than its factorization.

67890229128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61426 (or 30712 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 67890229128 in words is "sixty-seven billion, eight hundred ninety million, two hundred twenty-nine thousand, one hundred twenty-eight".