215404100052 has 96 divisors (see below), whose sum is σ = 525093273600. Its totient is φ = 68640711552.

The previous prime is 215404100029. The next prime is 215404100053. The reversal of 215404100052 is 250001404512.

215404100052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 215404099995 and 215404100031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215404100053) 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 31 ways as a sum of consecutive naturals, for example, 23109849 + ... + 23119167.

It is an arithmetic number, because the mean of its divisors is an integer number (5469721600).

Almost surely, 2^215404100052 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 215404100052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262546636800).

215404100052 is an abundant number, since it is smaller than the sum of its proper divisors (309689173548).

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

215404100052 is a wasteful number, since it uses less digits than its factorization.

215404100052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10005 (or 10003 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 215404100052 its reverse (250001404512), we get a palindrome (465405504564).

The spelling of 215404100052 in words is "two hundred fifteen billion, four hundred four million, one hundred thousand, fifty-two".