665032631363479 has 2 divisors, whose sum is σ = 665032631363480. Its totient is φ = 665032631363478.

The previous prime is 665032631363449. The next prime is 665032631363561. The reversal of 665032631363479 is 974363136230566.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 665032631363479 - 2³⁵ = 664998271625111 is a prime.

It is a super-2 number, since 2×665032631363479² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 665032631363479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (665032631363449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332516315681739 + 332516315681740.

It is an arithmetic number, because the mean of its divisors is an integer number (332516315681740).

Almost surely, 2^{665032631363479} is an apocalyptic number.

665032631363479 is a deficient number, since it is larger than the sum of its proper divisors (1).

665032631363479 is an equidigital number, since it uses as much as digits as its factorization.

665032631363479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 264539520, while the sum is 64.

The spelling of 665032631363479 in words is "six hundred sixty-five trillion, thirty-two billion, six hundred thirty-one million, three hundred sixty-three thousand, four hundred seventy-nine".