321477253547 has 2 divisors, whose sum is σ = 321477253548. Its totient is φ = 321477253546.

The previous prime is 321477253519. The next prime is 321477253549. The reversal of 321477253547 is 745352774123.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321477253547 is a prime.

It is a super-3 number, since 3×321477253547³ (a number of 35 digits) contains 333 as substring.

Together with 321477253549, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 321477253495 and 321477253504.

It is not a weakly prime, because it can be changed into another prime (321477253549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160738626773 + 160738626774.

It is an arithmetic number, because the mean of its divisors is an integer number (160738626774).

Almost surely, 2^321477253547 is an apocalyptic number.

321477253547 is a deficient number, since it is larger than the sum of its proper divisors (1).

321477253547 is an equidigital number, since it uses as much as digits as its factorization.

321477253547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4939200, while the sum is 50.

The spelling of 321477253547 in words is "three hundred twenty-one billion, four hundred seventy-seven million, two hundred fifty-three thousand, five hundred forty-seven".