215232413140 has 24 divisors (see below), whose sum is σ = 452279174760. Its totient is φ = 86037516288.

The previous prime is 215232413101. The next prime is 215232413141. The reversal of 215232413140 is 41314232512.

It can be written as a sum of positive squares in 4 ways, for example, as 3085580304 + 212146832836 = 55548^2 + 460594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 215232413099 and 215232413108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215232413141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3433725 + ... + 3495844.

It is an arithmetic number, because the mean of its divisors is an integer number (18844965615).

Almost surely, 2^215232413140 is an apocalyptic number.

215232413140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215232413140 is an abundant number, since it is smaller than the sum of its proper divisors (237046761620).

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

215232413140 is a wasteful number, since it uses less digits than its factorization.

215232413140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6931131 (or 6931129 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 215232413140 its reverse (41314232512), we get a palindrome (256546645652).

The spelling of 215232413140 in words is "two hundred fifteen billion, two hundred thirty-two million, four hundred thirteen thousand, one hundred forty".