215362421436 has 24 divisors (see below), whose sum is σ = 502527879504. Its totient is φ = 71785250560.

The previous prime is 215362421357. The next prime is 215362421459. The reversal of 215362421436 is 634124263512.

It is a junction number, because it is equal to n+sod(n) for n = 215362421394 and 215362421403.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 152356 + ... + 673748.

It is an arithmetic number, because the mean of its divisors is an integer number (20938661646).

Almost surely, 2^215362421436 is an apocalyptic number.

It is an amenable number.

215362421436 is an abundant number, since it is smaller than the sum of its proper divisors (287165458068).

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

215362421436 is a wasteful number, since it uses less digits than its factorization.

215362421436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555821 (or 555819 counting only the distinct ones).

The product of its digits is 207360, while the sum is 39.

Adding to 215362421436 its reverse (634124263512), we get a palindrome (849486684948).

The spelling of 215362421436 in words is "two hundred fifteen billion, three hundred sixty-two million, four hundred twenty-one thousand, four hundred thirty-six".