20118656553015 has 32 divisors (see below), whose sum is σ = 34977087129600. Its totient is φ = 9837305746560.

The previous prime is 20118656552983. The next prime is 20118656553019. The reversal of 20118656553015 is 51035565681102.

It is not a de Polignac number, because 20118656553015 - 2⁵ = 20118656552983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20118656553019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1138568220 + ... + 1138585889.

It is an arithmetic number, because the mean of its divisors is an integer number (1093033972800).

Almost surely, 2^{20118656553015} is an apocalyptic number.

20118656553015 is a deficient number, since it is larger than the sum of its proper divisors (14858430576585).

20118656553015 is a wasteful number, since it uses less digits than its factorization.

20118656553015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277154167.

The product of its (nonzero) digits is 1080000, while the sum is 48.

The spelling of 20118656553015 in words is "twenty trillion, one hundred eighteen billion, six hundred fifty-six million, five hundred fifty-three thousand, fifteen".