664226022655331 has 8 divisors (see below), whose sum is σ = 675122573196384. Its totient is φ = 653329717254720.

The previous prime is 664226022655259. The next prime is 664226022655333. The reversal of 664226022655331 is 133556220622466.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664226022655331 is a prime.

It is a super-2 number, since 2×664226022655331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664226022655333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55817546 + ... + 66663711.

It is an arithmetic number, because the mean of its divisors is an integer number (84390321649548).

Almost surely, 2^{664226022655331} is an apocalyptic number.

664226022655331 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

664226022655331 is a deficient number, since it is larger than the sum of its proper divisors (10896550541053).

664226022655331 is a wasteful number, since it uses less digits than its factorization.

664226022655331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122570221.

The product of its (nonzero) digits is 18662400, while the sum is 53.

The spelling of 664226022655331 in words is "six hundred sixty-four trillion, two hundred twenty-six billion, twenty-two million, six hundred fifty-five thousand, three hundred thirty-one".