1266351156355 has 16 divisors (see below), whose sum is σ = 1522750394880. Its totient is φ = 1010996374752.

The previous prime is 1266351156319. The next prime is 1266351156379. The reversal of 1266351156355 is 5536511536621.

It is a cyclic number.

It is not a de Polignac number, because 1266351156355 - 2¹⁷ = 1266351025283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1266351156299 and 1266351156308.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6988812 + ... + 7167718.

It is an arithmetic number, because the mean of its divisors is an integer number (95171899680).

Almost surely, 2^{1266351156355} is an apocalyptic number.

1266351156355 is a deficient number, since it is larger than the sum of its proper divisors (256399238525).

1266351156355 is a wasteful number, since it uses less digits than its factorization.

1266351156355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181818.

The product of its digits is 2430000, while the sum is 49.

The spelling of 1266351156355 in words is "one trillion, two hundred sixty-six billion, three hundred fifty-one million, one hundred fifty-six thousand, three hundred fifty-five".