345665205216631 has 8 divisors (see below), whose sum is σ = 348238887842304. Its totient is φ = 343095266131800.

The previous prime is 345665205216607. The next prime is 345665205216637. The reversal of 345665205216631 is 136612502566543.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 345665205216631 - 2¹³ = 345665205208439 is a prime.

It is a super-2 number, since 2×345665205216631² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345665205216637) 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, 935699851 + ... + 936069196.

It is an arithmetic number, because the mean of its divisors is an integer number (43529860980288).

Almost surely, 2^{345665205216631} is an apocalyptic number.

345665205216631 is a deficient number, since it is larger than the sum of its proper divisors (2573682625673).

345665205216631 is a wasteful number, since it uses less digits than its factorization.

345665205216631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871770421.

The product of its (nonzero) digits is 23328000, while the sum is 55.

The spelling of 345665205216631 in words is "three hundred forty-five trillion, six hundred sixty-five billion, two hundred five million, two hundred sixteen thousand, six hundred thirty-one".