217536453132 has 24 divisors (see below), whose sum is σ = 507601145856. Its totient is φ = 72509852688.

The previous prime is 217536453107. The next prime is 217536453137. The reversal of 217536453132 is 231354635712.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (217536453137) 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, 131493 + ... + 672579.

It is an arithmetic number, because the mean of its divisors is an integer number (21150047744).

Almost surely, 2^217536453132 is an apocalyptic number.

It is an amenable number.

217536453132 is an abundant number, since it is smaller than the sum of its proper divisors (290064692724).

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

217536453132 is a wasteful number, since it uses less digits than its factorization.

217536453132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574597 (or 574595 counting only the distinct ones).

The product of its digits is 453600, while the sum is 42.

The spelling of 217536453132 in words is "two hundred seventeen billion, five hundred thirty-six million, four hundred fifty-three thousand, one hundred thirty-two".