655016012112 has 240 divisors, whose sum is σ = 2170877054976. Its totient is φ = 166513670400.

The previous prime is 655016012083. The next prime is 655016012117. The reversal of 655016012112 is 211210610556.

It is a super-2 number, since 2×655016012112² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 655016012112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655016012117) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1739437 + ... + 2082227.

Almost surely, 2^655016012112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655016012112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1085438527488).

655016012112 is an abundant number, since it is smaller than the sum of its proper divisors (1515861042864).

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

655016012112 is a wasteful number, since it uses less digits than its factorization.

655016012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342878 (or 342861 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 655016012112 its reverse (211210610556), we get a palindrome (866226622668).

The spelling of 655016012112 in words is "six hundred fifty-five billion, sixteen million, twelve thousand, one hundred twelve".