321494504913791 has 4 divisors (see below), whose sum is σ = 350721278087784. Its totient is φ = 292267731739800.

The previous prime is 321494504913773. The next prime is 321494504913931. The reversal of 321494504913791 is 197319405494123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321494504913791 - 2²⁶ = 321494437804927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321494504913191) 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, 14613386586980 + ... + 14613386587001.

It is an arithmetic number, because the mean of its divisors is an integer number (87680319521946).

Almost surely, 2^{321494504913791} is an apocalyptic number.

321494504913791 is a deficient number, since it is larger than the sum of its proper divisors (29226773173993).

321494504913791 is a wasteful number, since it uses less digits than its factorization.

321494504913791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29226773173992.

The product of its (nonzero) digits is 29393280, while the sum is 62.

The spelling of 321494504913791 in words is "three hundred twenty-one trillion, four hundred ninety-four billion, five hundred four million, nine hundred thirteen thousand, seven hundred ninety-one".