1316206121653 has 16 divisors (see below), whose sum is σ = 1427957548416. Its totient is φ = 1208283112960.

The previous prime is 1316206121641. The next prime is 1316206121663. The reversal of 1316206121653 is 3561216026131.

It is a cyclic number.

It is not a de Polignac number, because 1316206121653 - 2²¹ = 1316204024501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316206121663) 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, 2764800 + ... + 3205702.

It is an arithmetic number, because the mean of its divisors is an integer number (89247346776).

Almost surely, 2^{1316206121653} is an apocalyptic number.

It is an amenable number.

1316206121653 is a deficient number, since it is larger than the sum of its proper divisors (111751426763).

1316206121653 is a wasteful number, since it uses less digits than its factorization.

1316206121653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445244.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 1316206121653 in words is "one trillion, three hundred sixteen billion, two hundred six million, one hundred twenty-one thousand, six hundred fifty-three".