321716202272146 has 96 divisors (see below), whose sum is σ = 567152107905600. Its totient is φ = 136361935987200.

The previous prime is 321716202272123. The next prime is 321716202272177. The reversal of 321716202272146 is 641272202617123.

It is a junction number, because it is equal to n+sod(n) for n = 321716202272096 and 321716202272105.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163830070 + ... + 165782158.

It is an arithmetic number, because the mean of its divisors is an integer number (5907834457350).

Almost surely, 2^{321716202272146} is an apocalyptic number.

321716202272146 is a deficient number, since it is larger than the sum of its proper divisors (245435905633454).

321716202272146 is a wasteful number, since it uses less digits than its factorization.

321716202272146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952696 (or 1952685 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 46.

Adding to 321716202272146 its reverse (641272202617123), we get a palindrome (962988404889269).

The spelling of 321716202272146 in words is "three hundred twenty-one trillion, seven hundred sixteen billion, two hundred two million, two hundred seventy-two thousand, one hundred forty-six".