345405333021 has 24 divisors (see below), whose sum is σ = 536021196480. Its totient is φ = 197267458752.

The previous prime is 345405333011. The next prime is 345405333023. The reversal of 345405333021 is 120333504543.

It is not a de Polignac number, because 345405333021 - 2⁵ = 345405332989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345405333023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 364576 + ... + 907593.

It is an arithmetic number, because the mean of its divisors is an integer number (22334216520).

Almost surely, 2^345405333021 is an apocalyptic number.

It is an amenable number.

345405333021 is a deficient number, since it is larger than the sum of its proper divisors (190615863459).

345405333021 is a wasteful number, since it uses less digits than its factorization.

345405333021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1274033 (or 1274026 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 33.

Adding to 345405333021 its reverse (120333504543), we get a palindrome (465738837564).

The spelling of 345405333021 in words is "three hundred forty-five billion, four hundred five million, three hundred thirty-three thousand, twenty-one".