20018302015087 has 16 divisors (see below), whose sum is σ = 20416691957760. Its totient is φ = 19627550411640.

The previous prime is 20018302015079. The next prime is 20018302015099. The reversal of 20018302015087 is 78051020381002.

It is not a de Polignac number, because 20018302015087 - 2³ = 20018302015079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20018302015037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78532912 + ... + 78787402.

It is an arithmetic number, because the mean of its divisors is an integer number (1276043247360).

Almost surely, 2^{20018302015087} is an apocalyptic number.

20018302015087 is a deficient number, since it is larger than the sum of its proper divisors (398389942673).

20018302015087 is an frugal number, since it uses more digits than its factorization.

20018302015087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255051 (or 254933 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

Adding to 20018302015087 its reverse (78051020381002), we get a palindrome (98069322396089).

The spelling of 20018302015087 in words is "twenty trillion, eighteen billion, three hundred two million, fifteen thousand, eighty-seven".