20215104445604 has 24 divisors (see below), whose sum is σ = 36209969949888. Its totient is φ = 9872059678880.

The previous prime is 20215104445603. The next prime is 20215104445607. The reversal of 20215104445604 is 40654440151202.

It is not an unprimeable number, because it can be changed into a prime (20215104445603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332586179 + ... + 332646954.

It is an arithmetic number, because the mean of its divisors is an integer number (1508748747912).

Almost surely, 2^{20215104445604} is an apocalyptic number.

It is an amenable number.

20215104445604 is a deficient number, since it is larger than the sum of its proper divisors (15994865504284).

20215104445604 is a wasteful number, since it uses less digits than its factorization.

20215104445604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665233315 (or 665233313 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 38.

Adding to 20215104445604 its reverse (40654440151202), we get a palindrome (60869544596806).

The spelling of 20215104445604 in words is "twenty trillion, two hundred fifteen billion, one hundred four million, four hundred forty-five thousand, six hundred four".