233145351120521 has 16 divisors (see below), whose sum is σ = 272127190861824. Its totient is φ = 195582544542864.

The previous prime is 233145351120491. The next prime is 233145351120527. The reversal of 233145351120521 is 125021153541332.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233145351120521 is a prime.

It is a super-2 number, since 2×233145351120521² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233145351120527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6526946 + ... + 22558628.

It is an arithmetic number, because the mean of its divisors is an integer number (17007949428864).

Almost surely, 2^{233145351120521} is an apocalyptic number.

It is an amenable number.

233145351120521 is a deficient number, since it is larger than the sum of its proper divisors (38981839741303).

233145351120521 is a wasteful number, since it uses less digits than its factorization.

233145351120521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16075940.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 233145351120521 in words is "two hundred thirty-three trillion, one hundred forty-five billion, three hundred fifty-one million, one hundred twenty thousand, five hundred twenty-one".