1217255360532 has 24 divisors (see below), whose sum is σ = 2842442331456. Its totient is φ = 405440383488.

The previous prime is 1217255360491. The next prime is 1217255360567. The reversal of 1217255360532 is 2350635527121.

It is a happy number.

It is a super-2 number, since 2×1217255360532² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38909133 + ... + 38940404.

It is an arithmetic number, because the mean of its divisors is an integer number (118435097144).

Almost surely, 2^{1217255360532} is an apocalyptic number.

1217255360532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1217255360532 is an abundant number, since it is smaller than the sum of its proper divisors (1625186970924).

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

1217255360532 is a wasteful number, since it uses less digits than its factorization.

1217255360532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77850847 (or 77850845 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 1217255360532 in words is "one trillion, two hundred seventeen billion, two hundred fifty-five million, three hundred sixty thousand, five hundred thirty-two".