406206661311 has 24 divisors (see below), whose sum is σ = 643399747536. Its totient is φ = 244910269440.

The previous prime is 406206661307. The next prime is 406206661319. The reversal of 406206661311 is 113166602604.

It is a happy number.

It is not a de Polignac number, because 406206661311 - 2² = 406206661307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406206661319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10610680 + ... + 10648893.

It is an arithmetic number, because the mean of its divisors is an integer number (26808322814).

Almost surely, 2^406206661311 is an apocalyptic number.

406206661311 is a deficient number, since it is larger than the sum of its proper divisors (237193086225).

406206661311 is a wasteful number, since it uses less digits than its factorization.

406206661311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21259783 (or 21259780 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 406206661311 in words is "four hundred six billion, two hundred six million, six hundred sixty-one thousand, three hundred eleven".