33540040421 has 8 divisors (see below), whose sum is σ = 35308025280. Its totient is φ = 31797865792.

The previous prime is 33540040363. The next prime is 33540040441. The reversal of 33540040421 is 12404004533.

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

It is not a de Polignac number, because 33540040421 - 2⁶ = 33540040357 is a prime.

It is a super-2 number, since 2×33540040421² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33540040441) 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, 6449891 + ... + 6455088.

It is an arithmetic number, because the mean of its divisors is an integer number (4413503160).

Almost surely, 2^33540040421 is an apocalyptic number.

It is an amenable number.

33540040421 is a deficient number, since it is larger than the sum of its proper divisors (1767984859).

33540040421 is a wasteful number, since it uses less digits than its factorization.

33540040421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12905115.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 33540040421 its reverse (12404004533), we get a palindrome (45944044954).

The spelling of 33540040421 in words is "thirty-three billion, five hundred forty million, forty thousand, four hundred twenty-one".