1361618862705 has 48 divisors (see below), whose sum is σ = 2387103909840. Its totient is φ = 717902997504.

The previous prime is 1361618862677. The next prime is 1361618862719. The reversal of 1361618862705 is 5072688161631.

It is a happy number.

1361618862705 is a `hidden beast` number, since 1 + 3 + 6 + 1 + 6 + 1 + 8 + 8 + 627 + 0 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 34922639376 + 1326696223329 = 186876^2 + 1151823^2 .

It is not a de Polignac number, because 1361618862705 - 2³⁰ = 1360545120881 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 23588659 + ... + 23646311.

It is an arithmetic number, because the mean of its divisors is an integer number (49731331455).

Almost surely, 2^{1361618862705} is an apocalyptic number.

1361618862705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1361618862705 is a deficient number, since it is larger than the sum of its proper divisors (1025485047135).

1361618862705 is a wasteful number, since it uses less digits than its factorization.

1361618862705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63650 (or 63647 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 1361618862705 in words is "one trillion, three hundred sixty-one billion, six hundred eighteen million, eight hundred sixty-two thousand, seven hundred five".