1361040545511 has 64 divisors (see below), whose sum is σ = 2055300480000. Its totient is φ = 890019187200.

The previous prime is 1361040545507. The next prime is 1361040545521. The reversal of 1361040545511 is 1155450401631.

1361040545511 is a `hidden beast` number, since 1 + 3 + 6 + 10 + 40 + 54 + 551 + 1 = 666.

It is not a de Polignac number, because 1361040545511 - 2² = 1361040545507 is a prime.

It is a super-2 number, since 2×1361040545511² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361040545521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 234618811 + ... + 234624611.

It is an arithmetic number, because the mean of its divisors is an integer number (32114070000).

Almost surely, 2^{1361040545511} is an apocalyptic number.

1361040545511 is a deficient number, since it is larger than the sum of its proper divisors (694259934489).

1361040545511 is a wasteful number, since it uses less digits than its factorization.

1361040545511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6661 (or 6655 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 1361040545511 in words is "one trillion, three hundred sixty-one billion, forty million, five hundred forty-five thousand, five hundred eleven".