321612053343261 has 4 divisors (see below), whose sum is σ = 428816071124352. Its totient is φ = 214408035562172.

The previous prime is 321612053343257. The next prime is 321612053343263. The reversal of 321612053343261 is 162343350216123.

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 321612053343261 - 2² = 321612053343257 is a prime.

It is a super-2 number, since 2×321612053343261² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321612053343263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53602008890541 + ... + 53602008890546.

It is an arithmetic number, because the mean of its divisors is an integer number (107204017781088).

Almost surely, 2^{321612053343261} is an apocalyptic number.

It is an amenable number.

321612053343261 is a deficient number, since it is larger than the sum of its proper divisors (107204017781091).

321612053343261 is a wasteful number, since it uses less digits than its factorization.

321612053343261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107204017781090.

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 321612053343261 in words is "three hundred twenty-one trillion, six hundred twelve billion, fifty-three million, three hundred forty-three thousand, two hundred sixty-one".