406365552069121 has 4 divisors (see below), whose sum is σ = 406365856682544. Its totient is φ = 406365247455700.

The previous prime is 406365552069091. The next prime is 406365552069163. The reversal of 406365552069121 is 121960255563604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 406365552069121 - 2¹¹ = 406365552067073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406365552069221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150296815 + ... + 152976676.

It is an arithmetic number, because the mean of its divisors is an integer number (101591464170636).

Almost surely, 2^{406365552069121} is an apocalyptic number.

It is an amenable number.

406365552069121 is a deficient number, since it is larger than the sum of its proper divisors (304613423).

406365552069121 is a wasteful number, since it uses less digits than its factorization.

406365552069121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304613422.

The product of its (nonzero) digits is 11664000, while the sum is 55.

The spelling of 406365552069121 in words is "four hundred six trillion, three hundred sixty-five billion, five hundred fifty-two million, sixty-nine thousand, one hundred twenty-one".