20215104445607 has 2 divisors, whose sum is σ = 20215104445608. Its totient is φ = 20215104445606.

The previous prime is 20215104445603. The next prime is 20215104445681. The reversal of 20215104445607 is 70654440151202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20215104445607 - 2² = 20215104445603 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20215104445603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10107552222803 + 10107552222804.

It is an arithmetic number, because the mean of its divisors is an integer number (10107552222804).

Almost surely, 2^{20215104445607} is an apocalyptic number.

20215104445607 is a deficient number, since it is larger than the sum of its proper divisors (1).

20215104445607 is an equidigital number, since it uses as much as digits as its factorization.

20215104445607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268800, while the sum is 41.

Adding to 20215104445607 its reverse (70654440151202), we get a palindrome (90869544596809).

The spelling of 20215104445607 in words is "twenty trillion, two hundred fifteen billion, one hundred four million, four hundred forty-five thousand, six hundred seven".