345421504434 has 16 divisors (see below), whose sum is σ = 690852053088. Its totient is φ = 115138994112.

The previous prime is 345421504433. The next prime is 345421504451. The reversal of 345421504434 is 434405124543.

It is a junction number, because it is equal to n+sod(n) for n = 345421504392 and 345421504401.

It is not an unprimeable number, because it can be changed into a prime (345421504433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183829 + ... + 851255.

It is an arithmetic number, because the mean of its divisors is an integer number (43178253318).

Almost surely, 2^345421504434 is an apocalyptic number.

345421504434 is an abundant number, since it is smaller than the sum of its proper divisors (345430548654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345421504434 is a wasteful number, since it uses less digits than its factorization.

345421504434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753689.

The product of its (nonzero) digits is 460800, while the sum is 39.

Adding to 345421504434 its reverse (434405124543), we get a palindrome (779826628977).

The spelling of 345421504434 in words is "three hundred forty-five billion, four hundred twenty-one million, five hundred four thousand, four hundred thirty-four".