134406406665 has 12 divisors (see below), whose sum is σ = 232971104964. Its totient is φ = 71683416864.

The previous prime is 134406406663. The next prime is 134406406679. The reversal of 134406406665 is 566604604431.

It can be written as a sum of positive squares in 2 ways, for example, as 30972128121 + 103434278544 = 175989^2 + 321612^2 .

It is not a de Polignac number, because 134406406665 - 2¹ = 134406406663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 2986809037 = 134406406665 / (1 + 3 + 4 + 4 + 0 + 6 + 4 + 0 + 6 + 6 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 134406406665.

It is not an unprimeable number, because it can be changed into a prime (134406406663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1493404474 + ... + 1493404563.

It is an arithmetic number, because the mean of its divisors is an integer number (19414258747).

Almost surely, 2^134406406665 is an apocalyptic number.

134406406665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

134406406665 is a deficient number, since it is larger than the sum of its proper divisors (98564698299).

134406406665 is a wasteful number, since it uses less digits than its factorization.

134406406665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986809048 (or 2986809045 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 134406406665 in words is "one hundred thirty-four billion, four hundred six million, four hundred six thousand, six hundred sixty-five".