1361254173109 has 16 divisors (see below), whose sum is σ = 1438010228736. Its totient is φ = 1286666046000.

The previous prime is 1361254173107. The next prime is 1361254173131. The reversal of 1361254173109 is 9013714521631.

It is a cyclic number.

It is not a de Polignac number, because 1361254173109 - 2¹ = 1361254173107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361254173107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249667 + ... + 1668784.

It is an arithmetic number, because the mean of its divisors is an integer number (89875639296).

Almost surely, 2^{1361254173109} is an apocalyptic number.

It is an amenable number.

1361254173109 is a deficient number, since it is larger than the sum of its proper divisors (76756055627).

1361254173109 is a wasteful number, since it uses less digits than its factorization.

1361254173109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919016.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 1361254173109 in words is "one trillion, three hundred sixty-one billion, two hundred fifty-four million, one hundred seventy-three thousand, one hundred nine".