321740726411 has 16 divisors (see below), whose sum is σ = 368792621568. Its totient is φ = 278057856000.

The previous prime is 321740726407. The next prime is 321740726413. The reversal of 321740726411 is 114627047123.

It is a cyclic number.

It is not a de Polignac number, because 321740726411 - 2² = 321740726407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321740726413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3768890 + ... + 3853311.

It is an arithmetic number, because the mean of its divisors is an integer number (23049538848).

Almost surely, 2^321740726411 is an apocalyptic number.

321740726411 is a deficient number, since it is larger than the sum of its proper divisors (47051895157).

321740726411 is a wasteful number, since it uses less digits than its factorization.

321740726411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7622422.

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 321740726411 in words is "three hundred twenty-one billion, seven hundred forty million, seven hundred twenty-six thousand, four hundred eleven".