215214531451300 has 144 divisors (see below), whose sum is σ = 508619202537600. Its totient is φ = 78731538278400.

The previous prime is 215214531451273. The next prime is 215214531451313. The reversal of 215214531451300 is 3154135412512.

It is a self number, because there is not a number n which added to its sum of digits gives 215214531451300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 392092849 + ... + 392641351.

It is an arithmetic number, because the mean of its divisors is an integer number (3532077795400).

Almost surely, 2^{215214531451300} is an apocalyptic number.

215214531451300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215214531451300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254309601268800).

215214531451300 is an abundant number, since it is smaller than the sum of its proper divisors (293404671086300).

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

215214531451300 is a wasteful number, since it uses less digits than its factorization.

215214531451300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555686 (or 555679 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 215214531451300 its reverse (3154135412512), we get a palindrome (218368666863812).

The spelling of 215214531451300 in words is "two hundred fifteen trillion, two hundred fourteen billion, five hundred thirty-one million, four hundred fifty-one thousand, three hundred".