345666400231252 has 12 divisors (see below), whose sum is σ = 604917156893140. Its totient is φ = 172832926833216.

The previous prime is 345666400231219. The next prime is 345666400231297. The reversal of 345666400231252 is 252132004666543.

It can be written as a sum of positive squares in 2 ways, for example, as 343063224505156 + 2603175726096 = 18521966^2 + 1613436^2 .

It is a junction number, because it is equal to n+sod(n) for n = 345666400231196 and 345666400231205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65461353 + ... + 70544464.

Almost surely, 2^{345666400231252} is an apocalyptic number.

It is an amenable number.

345666400231252 is a deficient number, since it is larger than the sum of its proper divisors (259250756661888).

345666400231252 is a wasteful number, since it uses less digits than its factorization.

345666400231252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136641210 (or 136641208 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 49.

Adding to 345666400231252 its reverse (252132004666543), we get a palindrome (597798404897795).

The spelling of 345666400231252 in words is "three hundred forty-five trillion, six hundred sixty-six billion, four hundred million, two hundred thirty-one thousand, two hundred fifty-two".