1266134465406 has 128 divisors (see below), whose sum is σ = 2711152166400. Its totient is φ = 393059520000.

The previous prime is 1266134465353. The next prime is 1266134465419. The reversal of 1266134465406 is 6045644316621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1303948501 + ... + 1303949471.

It is an arithmetic number, because the mean of its divisors is an integer number (21180876300).

Almost surely, 2^{1266134465406} is an apocalyptic number.

1266134465406 is an abundant number, since it is smaller than the sum of its proper divisors (1445017700994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266134465406 is a wasteful number, since it uses less digits than its factorization.

1266134465406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786.

The product of its (nonzero) digits is 2488320, while the sum is 48.

The spelling of 1266134465406 in words is "one trillion, two hundred sixty-six billion, one hundred thirty-four million, four hundred sixty-five thousand, four hundred six".