33333420401 has 4 divisors (see below), whose sum is σ = 33336486900. Its totient is φ = 33330353904.

The previous prime is 33333420397. The next prime is 33333420403. The reversal of 33333420401 is 10402433333.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22229319025 + 11104101376 = 149095^2 + 105376^2 .

It is a cyclic number.

It is not a de Polignac number, because 33333420401 - 2² = 33333420397 is a prime.

It is a super-3 number, since 3×33333420401³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33333420403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1516886 + ... + 1538703.

It is an arithmetic number, because the mean of its divisors is an integer number (8334121725).

Almost surely, 2^33333420401 is an apocalyptic number.

It is an amenable number.

33333420401 is a deficient number, since it is larger than the sum of its proper divisors (3066499).

33333420401 is a wasteful number, since it uses less digits than its factorization.

33333420401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066498.

The product of its (nonzero) digits is 7776, while the sum is 26.

Adding to 33333420401 its reverse (10402433333), we get a palindrome (43735853734).

The spelling of 33333420401 in words is "thirty-three billion, three hundred thirty-three million, four hundred twenty thousand, four hundred one".