215404424000000 has 140 divisors (see below), whose sum is σ = 537978304063002. Its totient is φ = 86161766400000.

The previous prime is 215404423999997. The next prime is 215404424000033. The reversal of 215404424000000 is 424404512.

It can be written as a sum of positive squares in 7 ways, for example, as 92058344847616 + 123346079152384 = 9594704^2 + 11106128^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 5462777 + ... + 21462776.

Almost surely, 2^{215404424000000} is an apocalyptic number.

215404424000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215404424000000 is an abundant number, since it is smaller than the sum of its proper divisors (322573880063002).

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

215404424000000 is an frugal number, since it uses more digits than its factorization.

215404424000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26925601 (or 26925560 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 215404424000000 its reverse (424404512), we get a palindrome (215404848404512).

The spelling of 215404424000000 in words is "two hundred fifteen trillion, four hundred four billion, four hundred twenty-four million", and thus it is an aban number.