33128438401 has 8 divisors (see below), whose sum is σ = 34571041344. Its totient is φ = 31686021840.

The previous prime is 33128438389. The next prime is 33128438419. The reversal of 33128438401 is 10483482133.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33128438401 - 2⁹ = 33128437889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33128438801) 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, 413335 + ... + 486931.

It is an arithmetic number, because the mean of its divisors is an integer number (4321380168).

Almost surely, 2^33128438401 is an apocalyptic number.

It is an amenable number.

33128438401 is a deficient number, since it is larger than the sum of its proper divisors (1442602943).

33128438401 is a wasteful number, since it uses less digits than its factorization.

33128438401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93191.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 33128438401 in words is "thirty-three billion, one hundred twenty-eight million, four hundred thirty-eight thousand, four hundred one".