215401412000 has 96 divisors (see below), whose sum is σ = 529485465600. Its totient is φ = 86120812800.

The previous prime is 215401411997. The next prime is 215401412011. The reversal of 215401412000 is 214104512.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9584777 + ... + 9607223.

It is an arithmetic number, because the mean of its divisors is an integer number (5515473600).

Almost surely, 2^215401412000 is an apocalyptic number.

215401412000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215401412000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264742732800).

215401412000 is an abundant number, since it is smaller than the sum of its proper divisors (314084053600).

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

215401412000 is a wasteful number, since it uses less digits than its factorization.

215401412000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24871 (or 24853 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 215401412000 its reverse (214104512), we get a palindrome (215615516512).

The spelling of 215401412000 in words is "two hundred fifteen billion, four hundred one million, four hundred twelve thousand".