321612405767402 has 8 divisors (see below), whose sum is σ = 489027082742436. Its totient is φ = 158603378186592.

The previous prime is 321612405767309. The next prime is 321612405767431. The reversal of 321612405767402 is 204767504216123.

It can be written as a sum of positive squares in 2 ways, for example, as 318966776648881 + 2645629118521 = 17859641^2 + 1626539^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1101412348373 + ... + 1101412348664.

Almost surely, 2^{321612405767402} is an apocalyptic number.

321612405767402 is a deficient number, since it is larger than the sum of its proper divisors (167414676975034).

321612405767402 is a wasteful number, since it uses less digits than its factorization.

321612405767402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202824697112.

The product of its (nonzero) digits is 3386880, while the sum is 50.

The spelling of 321612405767402 in words is "three hundred twenty-one trillion, six hundred twelve billion, four hundred five million, seven hundred sixty-seven thousand, four hundred two".