406756231745 has 4 divisors (see below), whose sum is σ = 488107478100. Its totient is φ = 325404985392.

The previous prime is 406756231697. The next prime is 406756231747. The reversal of 406756231745 is 547132657604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60862863616 + 345893368129 = 246704^2 + 588127^2 .

It is a cyclic number.

It is not a de Polignac number, because 406756231745 - 2³⁶ = 338036755009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 406756231693 and 406756231702.

It is not an unprimeable number, because it can be changed into a prime (406756231747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40675623170 + ... + 40675623179.

It is an arithmetic number, because the mean of its divisors is an integer number (122026869525).

Almost surely, 2^406756231745 is an apocalyptic number.

It is an amenable number.

406756231745 is a deficient number, since it is larger than the sum of its proper divisors (81351246355).

406756231745 is an equidigital number, since it uses as much as digits as its factorization.

406756231745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81351246354.

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 406756231745 in words is "four hundred six billion, seven hundred fifty-six million, two hundred thirty-one thousand, seven hundred forty-five".