690242134333321 has 4 divisors (see below), whose sum is σ = 690243160597200. Its totient is φ = 690241108069444.

The previous prime is 690242134333319. The next prime is 690242134333369. The reversal of 690242134333321 is 123333431242096.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 690242134333321 - 2¹ = 690242134333319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690242134313321) 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, 512122411 + ... + 513468448.

It is an arithmetic number, because the mean of its divisors is an integer number (172560790149300).

Almost surely, 2^{690242134333321} is an apocalyptic number.

It is an amenable number.

690242134333321 is a deficient number, since it is larger than the sum of its proper divisors (1026263879).

690242134333321 is a wasteful number, since it uses less digits than its factorization.

690242134333321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026263878.

The product of its (nonzero) digits is 1679616, while the sum is 46.

The spelling of 690242134333321 in words is "six hundred ninety trillion, two hundred forty-two billion, one hundred thirty-four million, three hundred thirty-three thousand, three hundred twenty-one".