1266270072761 has 16 divisors (see below), whose sum is σ = 1331589587328. Its totient is φ = 1202775100800.

The previous prime is 1266270072737. The next prime is 1266270072787. The reversal of 1266270072761 is 1672700726621.

It is a cyclic number.

It is not a de Polignac number, because 1266270072761 - 2¹⁴ = 1266270056377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1266270072961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606446 + ... + 1703031.

It is an arithmetic number, because the mean of its divisors is an integer number (83224349208).

Almost surely, 2^{1266270072761} is an apocalyptic number.

It is an amenable number.

1266270072761 is a deficient number, since it is larger than the sum of its proper divisors (65319514567).

1266270072761 is a wasteful number, since it uses less digits than its factorization.

1266270072761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309872.

The product of its (nonzero) digits is 592704, while the sum is 47.

The spelling of 1266270072761 in words is "one trillion, two hundred sixty-six billion, two hundred seventy million, seventy-two thousand, seven hundred sixty-one".