20212451415 has 24 divisors (see below), whose sum is σ = 37729910400. Its totient is φ = 9950745024.

The previous prime is 20212451401. The next prime is 20212451419. The reversal of 20212451415 is 51415421202.

It is a happy number.

20212451415 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 245 + 1 + 415 = 666.

It is not a de Polignac number, because 20212451415 - 2⁹ = 20212450903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212451419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17275015 + ... + 17276184.

It is an arithmetic number, because the mean of its divisors is an integer number (1572079600).

Almost surely, 2^20212451415 is an apocalyptic number.

20212451415 is a deficient number, since it is larger than the sum of its proper divisors (17517458985).

20212451415 is a wasteful number, since it uses less digits than its factorization.

20212451415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34551223 (or 34551220 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 20212451415 its reverse (51415421202), we get a palindrome (71627872617).

The spelling of 20212451415 in words is "twenty billion, two hundred twelve million, four hundred fifty-one thousand, four hundred fifteen".