406731868545 has 16 divisors (see below), whose sum is σ = 651676112640. Its totient is φ = 216621955584.

The previous prime is 406731868541. The next prime is 406731868549. The reversal of 406731868545 is 545868137604.

406731868545 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (406731868541) and next prime (406731868549).

It is not a de Polignac number, because 406731868545 - 2² = 406731868541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406731868541) 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, 18845584 + ... + 18867153.

It is an arithmetic number, because the mean of its divisors is an integer number (40729757040).

Almost surely, 2^406731868545 is an apocalyptic number.

It is an amenable number.

406731868545 is a deficient number, since it is larger than the sum of its proper divisors (244944244095).

406731868545 is a wasteful number, since it uses less digits than its factorization.

406731868545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37713464.

The product of its (nonzero) digits is 19353600, while the sum is 57.

The spelling of 406731868545 in words is "four hundred six billion, seven hundred thirty-one million, eight hundred sixty-eight thousand, five hundred forty-five".