1266626400265 has 8 divisors (see below), whose sum is σ = 1586036536128. Its totient is φ = 969244549680.

The previous prime is 1266626400227. The next prime is 1266626400293. The reversal of 1266626400265 is 5620046266621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1266626400265 - 2¹¹ = 1266626398217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5507071191 + ... + 5507071420.

It is an arithmetic number, because the mean of its divisors is an integer number (198254567016).

Almost surely, 2^{1266626400265} is an apocalyptic number.

It is an amenable number.

1266626400265 is a deficient number, since it is larger than the sum of its proper divisors (319410135863).

1266626400265 is a wasteful number, since it uses less digits than its factorization.

1266626400265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11014142639.

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 1266626400265 in words is "one trillion, two hundred sixty-six billion, six hundred twenty-six million, four hundred thousand, two hundred sixty-five".