354460665405661 has 4 divisors (see below), whose sum is σ = 369871998684192. Its totient is φ = 339049332127132.

The previous prime is 354460665405647. The next prime is 354460665405683. The reversal of 354460665405661 is 166504566064453.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 354460665405661 - 2⁷ = 354460665405533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 354460665405661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354460665405611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7705666639231 + ... + 7705666639276.

It is an arithmetic number, because the mean of its divisors is an integer number (92467999671048).

Almost surely, 2^{354460665405661} is an apocalyptic number.

It is an amenable number.

354460665405661 is a deficient number, since it is larger than the sum of its proper divisors (15411333278531).

354460665405661 is a wasteful number, since it uses less digits than its factorization.

354460665405661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15411333278530.

The product of its (nonzero) digits is 186624000, while the sum is 61.

The spelling of 354460665405661 in words is "three hundred fifty-four trillion, four hundred sixty billion, six hundred sixty-five million, four hundred five thousand, six hundred sixty-one".