406883543665 has 16 divisors (see below), whose sum is σ = 509745656448. Its totient is φ = 311197493376.

The previous prime is 406883543663. The next prime is 406883543681. The reversal of 406883543665 is 566345388604.

It is a cyclic number.

It is not a de Polignac number, because 406883543665 - 2¹ = 406883543663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406883543663) 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, 661812 + ... + 1118821.

It is an arithmetic number, because the mean of its divisors is an integer number (31859103528).

Almost surely, 2^406883543665 is an apocalyptic number.

It is an amenable number.

406883543665 is a deficient number, since it is larger than the sum of its proper divisors (102862112783).

406883543665 is a wasteful number, since it uses less digits than its factorization.

406883543665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782648.

The product of its (nonzero) digits is 49766400, while the sum is 58.

The spelling of 406883543665 in words is "four hundred six billion, eight hundred eighty-three million, five hundred forty-three thousand, six hundred sixty-five".