345217138069 has 4 divisors (see below), whose sum is σ = 345266752320. Its totient is φ = 345167523820.

The previous prime is 345217138067. The next prime is 345217138081. The reversal of 345217138069 is 960831712543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 345217138069 - 2¹ = 345217138067 is a prime.

It is a super-4 number, since 4×345217138069⁴ (a number of 47 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345217138067) 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, 24796687 + ... + 24810604.

It is an arithmetic number, because the mean of its divisors is an integer number (86316688080).

It is a 1-persistent number, because it is pandigital, but 2⋅345217138069 = 690434276138 is not.

Almost surely, 2^345217138069 is an apocalyptic number.

It is an amenable number.

345217138069 is a deficient number, since it is larger than the sum of its proper divisors (49614251).

345217138069 is an equidigital number, since it uses as much as digits as its factorization.

345217138069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49614250.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 345217138069 in words is "three hundred forty-five billion, two hundred seventeen million, one hundred thirty-eight thousand, sixty-nine".