20500106235015 has 32 divisors (see below), whose sum is σ = 35813037770496. Its totient is φ = 9930824847360.

The previous prime is 20500106234989. The next prime is 20500106235023. The reversal of 20500106235015 is 51053260100502.

It is a happy number.

It is not a de Polignac number, because 20500106235015 - 2¹³ = 20500106226823 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53687929 + ... + 54068418.

It is an arithmetic number, because the mean of its divisors is an integer number (1119157430328).

Almost surely, 2^{20500106235015} is an apocalyptic number.

20500106235015 is a deficient number, since it is larger than the sum of its proper divisors (15312931535481).

20500106235015 is a wasteful number, since it uses less digits than its factorization.

20500106235015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107757519.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 20500106235015 its reverse (51053260100502), we get a palindrome (71553366335517).

The spelling of 20500106235015 in words is "twenty trillion, five hundred billion, one hundred six million, two hundred thirty-five thousand, fifteen".