345331545553 has 4 divisors (see below), whose sum is σ = 348499724980. Its totient is φ = 342163366128.

The previous prime is 345331545539. The next prime is 345331545563. The reversal of 345331545553 is 355545133543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 355545133543 = 113 ⋅3146417111.

It can be written as a sum of positive squares in 2 ways, for example, as 207577738449 + 137753807104 = 455607^2 + 371152^2 .

It is a cyclic number.

It is not a de Polignac number, because 345331545553 - 2¹⁷ = 345331414481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345331545523) 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, 1584089550 + ... + 1584089767.

It is an arithmetic number, because the mean of its divisors is an integer number (87124931245).

Almost surely, 2^345331545553 is an apocalyptic number.

It is an amenable number.

345331545553 is a deficient number, since it is larger than the sum of its proper divisors (3168179427).

345331545553 is a wasteful number, since it uses less digits than its factorization.

345331545553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3168179426.

The product of its digits is 4050000, while the sum is 46.

The spelling of 345331545553 in words is "three hundred forty-five billion, three hundred thirty-one million, five hundred forty-five thousand, five hundred fifty-three".