1361253715266 has 16 divisors (see below), whose sum is σ = 2840877319104. Its totient is φ = 434022923664.

The previous prime is 1361253715231. The next prime is 1361253715291. The reversal of 1361253715266 is 6625173521631.

It is a happy number.

It is a super-3 number, since 3×1361253715266³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4932078541 + ... + 4932078816.

It is an arithmetic number, because the mean of its divisors is an integer number (177554832444).

Almost surely, 2^{1361253715266} is an apocalyptic number.

1361253715266 is an abundant number, since it is smaller than the sum of its proper divisors (1479623603838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1361253715266 is a wasteful number, since it uses less digits than its factorization.

1361253715266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9864157385.

The product of its digits is 1360800, while the sum is 48.

The spelling of 1361253715266 in words is "one trillion, three hundred sixty-one billion, two hundred fifty-three million, seven hundred fifteen thousand, two hundred sixty-six".