346406442642403 has 16 divisors (see below), whose sum is σ = 407477633272416. Its totient is φ = 290325989859840.

The previous prime is 346406442642397. The next prime is 346406442642457. The reversal of 346406442642403 is 304246244604643.

It is a happy number.

It is not a de Polignac number, because 346406442642403 - 2⁹ = 346406442641891 is a prime.

It is a super-2 number, since 2×346406442642403² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (346406442642473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1519599126 + ... + 1519827067.

It is an arithmetic number, because the mean of its divisors is an integer number (25467352079526).

Almost surely, 2^{346406442642403} is an apocalyptic number.

346406442642403 is a deficient number, since it is larger than the sum of its proper divisors (61071190630013).

346406442642403 is a wasteful number, since it uses less digits than its factorization.

346406442642403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3039427014.

The product of its (nonzero) digits is 31850496, while the sum is 52.

The spelling of 346406442642403 in words is "three hundred forty-six trillion, four hundred six billion, four hundred forty-two million, six hundred forty-two thousand, four hundred three".