215343240460 has 96 divisors (see below), whose sum is σ = 468619639488. Its totient is φ = 83058877440.

The previous prime is 215343240457. The next prime is 215343240487. The reversal of 215343240460 is 64042343512.

It is a super-2 number, since 2×215343240460² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41116962 + ... + 41122198.

It is an arithmetic number, because the mean of its divisors is an integer number (4881454578).

Almost surely, 2^215343240460 is an apocalyptic number.

215343240460 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 215343240460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234309819744).

215343240460 is an abundant number, since it is smaller than the sum of its proper divisors (253276399028).

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

215343240460 is a wasteful number, since it uses less digits than its factorization.

215343240460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5771 (or 5769 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 215343240460 its reverse (64042343512), we get a palindrome (279385583972).

The spelling of 215343240460 in words is "two hundred fifteen billion, three hundred forty-three million, two hundred forty thousand, four hundred sixty".