1217353502136 has 32 divisors (see below), whose sum is σ = 3044040076800. Its totient is φ = 405696991200.

The previous prime is 1217353502119. The next prime is 1217353502137. The reversal of 1217353502136 is 6312053537121.

It is a junction number, because it is equal to n+sod(n) for n = 1217353502094 and 1217353502103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217353502137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5355690 + ... + 5578361.

It is an arithmetic number, because the mean of its divisors is an integer number (95126252400).

Almost surely, 2^{1217353502136} is an apocalyptic number.

It is an amenable number.

1217353502136 is an abundant number, since it is smaller than the sum of its proper divisors (1826686574664).

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

1217353502136 is a wasteful number, since it uses less digits than its factorization.

1217353502136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10938699 (or 10938695 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 39.

The spelling of 1217353502136 in words is "one trillion, two hundred seventeen billion, three hundred fifty-three million, five hundred two thousand, one hundred thirty-six".