1361207226665 has 16 divisors (see below), whose sum is σ = 1919016622656. Its totient is φ = 913817438400.

The previous prime is 1361207226637. The next prime is 1361207226671. The reversal of 1361207226665 is 5666227021631.

It is not a de Polignac number, because 1361207226665 - 2¹⁴ = 1361207210281 is a prime.

It is a super-2 number, since 2×1361207226665² (a number of 25 digits) contains 22 as substring.

It is a Duffinian 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, 951892451 + ... + 951893880.

It is an arithmetic number, because the mean of its divisors is an integer number (119938538916).

Almost surely, 2^{1361207226665} is an apocalyptic number.

It is an amenable number.

1361207226665 is a deficient number, since it is larger than the sum of its proper divisors (557809395991).

1361207226665 is a wasteful number, since it uses less digits than its factorization.

1361207226665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903786360.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 1361207226665 in words is "one trillion, three hundred sixty-one billion, two hundred seven million, two hundred twenty-six thousand, six hundred sixty-five".