345444403647 has 16 divisors (see below), whose sum is σ = 526399706880. Its totient is φ = 197393714112.

The previous prime is 345444403597. The next prime is 345444403651. The reversal of 345444403647 is 746304444543.

It is not a de Polignac number, because 345444403647 - 2¹⁰ = 345444402623 is a prime.

It is a super-2 number, since 2×345444403647² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 345444403596 and 345444403605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345444403247) 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, 2417128 + ... + 2556050.

It is an arithmetic number, because the mean of its divisors is an integer number (32899981680).

Almost surely, 2^345444403647 is an apocalyptic number.

345444403647 is a deficient number, since it is larger than the sum of its proper divisors (180955303233).

345444403647 is a wasteful number, since it uses less digits than its factorization.

345444403647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257342.

The product of its (nonzero) digits is 7741440, while the sum is 48.

The spelling of 345444403647 in words is "three hundred forty-five billion, four hundred forty-four million, four hundred three thousand, six hundred forty-seven".