420353144345 has 16 divisors (see below), whose sum is σ = 510670137600. Its totient is φ = 332120955264.

The previous prime is 420353144297. The next prime is 420353144363. The reversal of 420353144345 is 543441353024.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420353144345 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420353144299 and 420353144308.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1099232 + ... + 1431438.

It is an arithmetic number, because the mean of its divisors is an integer number (31916883600).

Almost surely, 2^420353144345 is an apocalyptic number.

It is an amenable number.

420353144345 is a deficient number, since it is larger than the sum of its proper divisors (90316993255).

420353144345 is a wasteful number, since it uses less digits than its factorization.

420353144345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335344.

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 420353144345 its reverse (543441353024), we get a palindrome (963794497369).

The spelling of 420353144345 in words is "four hundred twenty billion, three hundred fifty-three million, one hundred forty-four thousand, three hundred forty-five".