21315100614315 has 16 divisors (see below), whose sum is σ = 34349514662400. Its totient is φ = 11286269101152.

The previous prime is 21315100614293. The next prime is 21315100614331. The reversal of 21315100614315 is 51341600151312.

It is a happy number.

It is not a de Polignac number, because 21315100614315 - 2¹⁵ = 21315100581547 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5111532835 + ... + 5111537004.

It is an arithmetic number, because the mean of its divisors is an integer number (2146844666400).

Almost surely, 2^{21315100614315} is an apocalyptic number.

21315100614315 is a deficient number, since it is larger than the sum of its proper divisors (13034414048085).

21315100614315 is a wasteful number, since it uses less digits than its factorization.

21315100614315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10223069986.

The product of its (nonzero) digits is 10800, while the sum is 33.

Adding to 21315100614315 its reverse (51341600151312), we get a palindrome (72656700765627).

The spelling of 21315100614315 in words is "twenty-one trillion, three hundred fifteen billion, one hundred million, six hundred fourteen thousand, three hundred fifteen".