345210727969 has 4 divisors (see below), whose sum is σ = 345325077040. Its totient is φ = 345096378900.

The previous prime is 345210727903. The next prime is 345210727997. The reversal of 345210727969 is 969727012543.

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 a de Polignac number, because none of the positive numbers 2^k-345210727969 is a prime.

It is a super-2 number, since 2×345210727969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345210707969) 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, 57170007 + ... + 57176044.

It is an arithmetic number, because the mean of its divisors is an integer number (86331269260).

Almost surely, 2^345210727969 is an apocalyptic number.

It is an amenable number.

345210727969 is a deficient number, since it is larger than the sum of its proper divisors (114349071).

345210727969 is a wasteful number, since it uses less digits than its factorization.

345210727969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114349070.

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 345210727969 in words is "three hundred forty-five billion, two hundred ten million, seven hundred twenty-seven thousand, nine hundred sixty-nine".