355056421297 has 4 divisors (see below), whose sum is σ = 375942093156. Its totient is φ = 334170749440.

The previous prime is 355056421267. The next prime is 355056421303. The reversal of 355056421297 is 792124650553.

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

It can be written as a sum of positive squares in 2 ways, for example, as 192441019761 + 162615401536 = 438681^2 + 403256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-355056421297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 355056421297.

It is not an unprimeable number, because it can be changed into a prime (355056421217) 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, 10442835904 + ... + 10442835937.

It is an arithmetic number, because the mean of its divisors is an integer number (93985523289).

Almost surely, 2^355056421297 is an apocalyptic number.

It is an amenable number.

355056421297 is a deficient number, since it is larger than the sum of its proper divisors (20885671859).

355056421297 is a wasteful number, since it uses less digits than its factorization.

355056421297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20885671858.

The product of its (nonzero) digits is 2268000, while the sum is 49.

The spelling of 355056421297 in words is "three hundred fifty-five billion, fifty-six million, four hundred twenty-one thousand, two hundred ninety-seven".