20005102615023 has 24 divisors (see below), whose sum is σ = 28911212415072. Its totient is φ = 13329834835968.

The previous prime is 20005102615009. The next prime is 20005102615031. The reversal of 20005102615023 is 32051620150002.

It is a happy number.

20005102615023 is a `hidden beast` number, since 20 + 0 + 0 + 5 + 1 + 0 + 2 + 615 + 0 + 23 = 666.

It is not a de Polignac number, because 20005102615023 - 2⁴ = 20005102615007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20005102615063) 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, 234448015 + ... + 234533327.

It is an arithmetic number, because the mean of its divisors is an integer number (1204633850628).

Almost surely, 2^{20005102615023} is an apocalyptic number.

20005102615023 is a deficient number, since it is larger than the sum of its proper divisors (8906109800049).

20005102615023 is a wasteful number, since it uses less digits than its factorization.

20005102615023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98495 (or 98492 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 20005102615023 its reverse (32051620150002), we get a palindrome (52056722765025).

The spelling of 20005102615023 in words is "twenty trillion, five billion, one hundred two million, six hundred fifteen thousand, twenty-three".