345956349253 has 4 divisors (see below), whose sum is σ = 347205289420. Its totient is φ = 344707409088.

The previous prime is 345956349241. The next prime is 345956349281. The reversal of 345956349253 is 352943659543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352943659543 = 53 ⋅6659314331.

It can be written as a sum of positive squares in 2 ways, for example, as 184623183684 + 161333165569 = 429678^2 + 401663^2 .

It is a cyclic number.

It is not a de Polignac number, because 345956349253 - 2¹³ = 345956341061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345956349553) 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, 624469668 + ... + 624470221.

It is an arithmetic number, because the mean of its divisors is an integer number (86801322355).

Almost surely, 2^345956349253 is an apocalyptic number.

It is an amenable number.

345956349253 is a deficient number, since it is larger than the sum of its proper divisors (1248940167).

345956349253 is a wasteful number, since it uses less digits than its factorization.

345956349253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248940166.

The product of its digits is 52488000, while the sum is 58.

The spelling of 345956349253 in words is "three hundred forty-five billion, nine hundred fifty-six million, three hundred forty-nine thousand, two hundred fifty-three".