1368783565655 has 16 divisors (see below), whose sum is σ = 1792384321824. Its totient is φ = 995188846080.

The previous prime is 1368783565603. The next prime is 1368783565693. The reversal of 1368783565655 is 5565653878631.

It is a happy number.

It is not a de Polignac number, because 1368783565655 - 2¹² = 1368783561559 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 3435854 + ... + 3813483.

It is an arithmetic number, because the mean of its divisors is an integer number (112024020114).

Almost surely, 2^{1368783565655} is an apocalyptic number.

1368783565655 is a deficient number, since it is larger than the sum of its proper divisors (423600756169).

1368783565655 is a wasteful number, since it uses less digits than its factorization.

1368783565655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7252786.

The product of its digits is 544320000, while the sum is 68.

The spelling of 1368783565655 in words is "one trillion, three hundred sixty-eight billion, seven hundred eighty-three million, five hundred sixty-five thousand, six hundred fifty-five".