354505221505 has 8 divisors (see below), whose sum is σ = 425413945152. Its totient is φ = 283599057648.

The previous prime is 354505221481. The next prime is 354505221533. The reversal of 354505221505 is 505122505453.

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 354505221505 - 2¹³ = 354505213313 is a prime.

It is a super-2 number, since 2×354505221505² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320797 + ... + 901066.

It is an arithmetic number, because the mean of its divisors is an integer number (53176743144).

Almost surely, 2^354505221505 is an apocalyptic number.

It is an amenable number.

354505221505 is a deficient number, since it is larger than the sum of its proper divisors (70908723647).

354505221505 is a wasteful number, since it uses less digits than its factorization.

354505221505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279895.

The product of its (nonzero) digits is 150000, while the sum is 37.

Adding to 354505221505 its reverse (505122505453), we get a palindrome (859627726958).

The spelling of 354505221505 in words is "three hundred fifty-four billion, five hundred five million, two hundred twenty-one thousand, five hundred five".