345520345404032 has 16 divisors (see below), whose sum is σ = 688341313109850. Its totient is φ = 172760172701952.

The previous prime is 345520345403983. The next prime is 345520345404043. The reversal of 345520345404032 is 230404543025543.

It can be written as a sum of positive squares in only one way, i.e., 308442670751296 + 37077674652736 = 17562536^2 + 6089144^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1349688849107 + ... + 1349688849362.

Almost surely, 2^{345520345404032} is an apocalyptic number.

345520345404032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

345520345404032 is a deficient number, since it is larger than the sum of its proper divisors (342820967705818).

345520345404032 is an equidigital number, since it uses as much as digits as its factorization.

345520345404032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699377698483 (or 2699377698471 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 44.

Adding to 345520345404032 its reverse (230404543025543), we get a palindrome (575924888429575).

The spelling of 345520345404032 in words is "three hundred forty-five trillion, five hundred twenty billion, three hundred forty-five million, four hundred four thousand, thirty-two".