355220215297 has 4 divisors (see below), whose sum is σ = 357023363796. Its totient is φ = 353417066800.

The previous prime is 355220215291. The next prime is 355220215303. The reversal of 355220215297 is 792512022553.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (355220215291) and next prime (355220215303).

It can be written as a sum of positive squares in 2 ways, for example, as 351985904656 + 3234310641 = 593284^2 + 56871^2 .

It is a cyclic number.

It is not a de Polignac number, because 355220215297 - 2⁷ = 355220215169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (355220215291) 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, 901573954 + ... + 901574347.

It is an arithmetic number, because the mean of its divisors is an integer number (89255840949).

Almost surely, 2^355220215297 is an apocalyptic number.

It is an amenable number.

355220215297 is a deficient number, since it is larger than the sum of its proper divisors (1803148499).

355220215297 is a wasteful number, since it uses less digits than its factorization.

355220215297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803148498.

The product of its (nonzero) digits is 378000, while the sum is 43.

The spelling of 355220215297 in words is "three hundred fifty-five billion, two hundred twenty million, two hundred fifteen thousand, two hundred ninety-seven".