345216867523 has 24 divisors (see below), whose sum is σ = 399630781760. Its totient is φ = 297162399600.

The previous prime is 345216867517. The next prime is 345216867539. The reversal of 345216867523 is 325768612543.

It is not a de Polignac number, because 345216867523 - 2³³ = 336626932931 is a prime.

It is a super-3 number, since 3×345216867523³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (345216867923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4530328 + ... + 4605898.

Almost surely, 2^345216867523 is an apocalyptic number.

345216867523 is a deficient number, since it is larger than the sum of its proper divisors (54413914237).

345216867523 is a wasteful number, since it uses less digits than its factorization.

345216867523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77599 (or 77588 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 52.

The spelling of 345216867523 in words is "three hundred forty-five billion, two hundred sixteen million, eight hundred sixty-seven thousand, five hundred twenty-three".