33151140145021 has 4 divisors (see below), whose sum is σ = 33959704538844. Its totient is φ = 32342575751200.

The previous prime is 33151140144979. The next prime is 33151140145051. The reversal of 33151140145021 is 12054104115133.

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 9549713048121 + 23601427096900 = 3090261^2 + 4858130^2 .

It is a cyclic number.

It is not a de Polignac number, because 33151140145021 - 2¹⁵ = 33151140112253 is a prime.

It is a super-2 number, since 2×33151140145021² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33151140145051) 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, 404282196850 + ... + 404282196931.

It is an arithmetic number, because the mean of its divisors is an integer number (8489926134711).

Almost surely, 2^{33151140145021} is an apocalyptic number.

It is an amenable number.

33151140145021 is a deficient number, since it is larger than the sum of its proper divisors (808564393823).

33151140145021 is an equidigital number, since it uses as much as digits as its factorization.

33151140145021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808564393822.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 33151140145021 in words is "thirty-three trillion, one hundred fifty-one billion, one hundred forty million, one hundred forty-five thousand, twenty-one".