342669556706621 has 8 divisors (see below), whose sum is σ = 342810632554104. Its totient is φ = 342528507924480.

The previous prime is 342669556706569. The next prime is 342669556706623. The reversal of 342669556706621 is 126607655966243.

It can be written as a sum of positive squares in 4 ways, for example, as 328087507070596 + 14582049636025 = 18113186^2 + 3818645^2 .

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 342669556706621 - 2⁶ = 342669556706557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342669556706623) 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, 18580061 + ... + 32102301.

It is an arithmetic number, because the mean of its divisors is an integer number (42851329069263).

Almost surely, 2^{342669556706621} is an apocalyptic number.

It is an amenable number.

342669556706621 is a deficient number, since it is larger than the sum of its proper divisors (141075847483).

342669556706621 is a wasteful number, since it uses less digits than its factorization.

342669556706621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13532671.

The product of its (nonzero) digits is 587865600, while the sum is 68.

The spelling of 342669556706621 in words is "three hundred forty-two trillion, six hundred sixty-nine billion, five hundred fifty-six million, seven hundred six thousand, six hundred twenty-one".