354104021545 has 4 divisors (see below), whose sum is σ = 424924825860. Its totient is φ = 283283217232.

The previous prime is 354104021539. The next prime is 354104021599. The reversal of 354104021545 is 545120401453.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545120401453 = 21067 ⋅25875559.

It can be written as a sum of positive squares in 2 ways, for example, as 221581084176 + 132522937369 = 470724^2 + 364037^2 .

It is a cyclic number.

It is not a de Polignac number, because 354104021545 - 2¹³ = 354104013353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 354104021545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35410402150 + ... + 35410402159.

It is an arithmetic number, because the mean of its divisors is an integer number (106231206465).

Almost surely, 2^354104021545 is an apocalyptic number.

It is an amenable number.

354104021545 is a deficient number, since it is larger than the sum of its proper divisors (70820804315).

354104021545 is an equidigital number, since it uses as much as digits as its factorization.

354104021545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70820804314.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 354104021545 its reverse (545120401453), we get a palindrome (899224422998).

The spelling of 354104021545 in words is "three hundred fifty-four billion, one hundred four million, twenty-one thousand, five hundred forty-five".