354405867617 has 4 divisors (see below), whose sum is σ = 358892017920. Its totient is φ = 349919717316.

The previous prime is 354405867593. The next prime is 354405867661. The reversal of 354405867617 is 716768504453.

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, and also an emirpimes, since its reverse is a distinct semiprime: 716768504453 = 191 ⋅3752714683.

It is a cyclic number.

It is not a de Polignac number, because 354405867617 - 2⁶ = 354405867553 is a prime.

It is a super-4 number, since 4×354405867617⁴ (a number of 47 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (354405867817) 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, 2243075033 + ... + 2243075190.

It is an arithmetic number, because the mean of its divisors is an integer number (89723004480).

Almost surely, 2^354405867617 is an apocalyptic number.

It is an amenable number.

354405867617 is a deficient number, since it is larger than the sum of its proper divisors (4486150303).

354405867617 is an equidigital number, since it uses as much as digits as its factorization.

354405867617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486150302.

The product of its (nonzero) digits is 16934400, while the sum is 56.

The spelling of 354405867617 in words is "three hundred fifty-four billion, four hundred five million, eight hundred sixty-seven thousand, six hundred seventeen".