20402340112152 has 192 divisors, whose sum is σ = 61603061097600. Its totient is φ = 6251879047680.

The previous prime is 20402340112139. The next prime is 20402340112153. The reversal of 20402340112152 is 25121104320402.

20402340112152 is a `hidden beast` number, since 2 + 0 + 40 + 2 + 3 + 401 + 1 + 215 + 2 = 666.

It is a super-2 number, since 2×20402340112152² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402340112153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1116174 + ... + 6484637.

It is an arithmetic number, because the mean of its divisors is an integer number (320849276550).

Almost surely, 2^{20402340112152} 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 20402340112152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30801530548800).

20402340112152 is an abundant number, since it is smaller than the sum of its proper divisors (41200720985448).

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

20402340112152 is a wasteful number, since it uses less digits than its factorization.

20402340112152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7600903 (or 7600876 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 20402340112152 its reverse (25121104320402), we get a palindrome (45523444432554).

The spelling of 20402340112152 in words is "twenty trillion, four hundred two billion, three hundred forty million, one hundred twelve thousand, one hundred fifty-two".