215132314440 has 64 divisors (see below), whose sum is σ = 660406190400. Its totient is φ = 56034461952.

The previous prime is 215132314427. The next prime is 215132314451. The reversal of 215132314440 is 44413231512.

It is a super-2 number, since 2×215132314440² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 215132314398 and 215132314407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20840995 + ... + 20851314.

It is an arithmetic number, because the mean of its divisors is an integer number (10318846725).

Almost surely, 2^215132314440 is an apocalyptic number.

215132314440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215132314440 is an abundant number, since it is smaller than the sum of its proper divisors (445273875960).

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

215132314440 is a wasteful number, since it uses less digits than its factorization.

215132314440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41692366 (or 41692362 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 215132314440 its reverse (44413231512), we get a palindrome (259545545952).

The spelling of 215132314440 in words is "two hundred fifteen billion, one hundred thirty-two million, three hundred fourteen thousand, four hundred forty".