20013201517215 has 16 divisors (see below), whose sum is σ = 32091190540128. Its totient is φ = 10650351438336.

The previous prime is 20013201517157. The next prime is 20013201517237. The reversal of 20013201517215 is 51271510231002.

It is not a de Polignac number, because 20013201517215 - 2⁶ = 20013201517151 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1459745262 + ... + 1459758971.

It is an arithmetic number, because the mean of its divisors is an integer number (2005699408758).

Almost surely, 2^{20013201517215} is an apocalyptic number.

20013201517215 is a deficient number, since it is larger than the sum of its proper divisors (12077989022913).

20013201517215 is a wasteful number, since it uses less digits than its factorization.

20013201517215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919504698.

The product of its (nonzero) digits is 4200, while the sum is 30.

Adding to 20013201517215 its reverse (51271510231002), we get a palindrome (71284711748217).

The spelling of 20013201517215 in words is "twenty trillion, thirteen billion, two hundred one million, five hundred seventeen thousand, two hundred fifteen".