4350643431655 has 40 divisors (see below), whose sum is σ = 5688607353984. Its totient is φ = 3190949467200.

The previous prime is 4350643431653. The next prime is 4350643431661. The reversal of 4350643431655 is 5561343460534.

It is not a de Polignac number, because 4350643431655 - 2¹ = 4350643431653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4350643431599 and 4350643431608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4350643431653) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 20092065 + ... + 20307445.

Almost surely, 2^{4350643431655} is an apocalyptic number.

4350643431655 is a deficient number, since it is larger than the sum of its proper divisors (1337963922329).

4350643431655 is an frugal number, since it uses more digits than its factorization.

4350643431655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215493 (or 215436 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 49.

The spelling of 4350643431655 in words is "four trillion, three hundred fifty billion, six hundred forty-three million, four hundred thirty-one thousand, six hundred fifty-five".