215420673324 has 96 divisors (see below), whose sum is σ = 518222444544. Its totient is φ = 69605844480.

The previous prime is 215420673311. The next prime is 215420673329. The reversal of 215420673324 is 423376024512.

It is not an unprimeable number, because it can be changed into a prime (215420673329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67254307 + ... + 67257509.

It is an arithmetic number, because the mean of its divisors is an integer number (5398150464).

Almost surely, 2^215420673324 is an apocalyptic number.

It is an amenable number.

215420673324 is an abundant number, since it is smaller than the sum of its proper divisors (302801771220).

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

215420673324 is a wasteful number, since it uses less digits than its factorization.

215420673324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087 (or 4085 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 39.

Adding to 215420673324 its reverse (423376024512), we get a palindrome (638796697836).

The spelling of 215420673324 in words is "two hundred fifteen billion, four hundred twenty million, six hundred seventy-three thousand, three hundred twenty-four".