355388672217 has 16 divisors (see below), whose sum is σ = 483958824192. Its totient is φ = 231872678400.

The previous prime is 355388672209. The next prime is 355388672239. The reversal of 355388672217 is 712276883553.

355388672217 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 355388672217 - 2³ = 355388672209 is a prime.

It is a super-2 number, since 2×355388672217² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (355388672257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3217023 + ... + 3325659.

It is an arithmetic number, because the mean of its divisors is an integer number (30247426512).

Almost surely, 2^355388672217 is an apocalyptic number.

It is an amenable number.

355388672217 is a deficient number, since it is larger than the sum of its proper divisors (128570151975).

355388672217 is a wasteful number, since it uses less digits than its factorization.

355388672217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131888.

The product of its digits is 16934400, while the sum is 57.

The spelling of 355388672217 in words is "three hundred fifty-five billion, three hundred eighty-eight million, six hundred seventy-two thousand, two hundred seventeen".