20117515277275 has 48 divisors (see below), whose sum is σ = 26946801731808. Its totient is φ = 14810607360000.

The previous prime is 20117515277273. The next prime is 20117515277281. The reversal of 20117515277275 is 57277251571102.

It is not a de Polignac number, because 20117515277275 - 2¹ = 20117515277273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20117515277273) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 235975957 + ... + 236061193.

It is an arithmetic number, because the mean of its divisors is an integer number (561391702746).

Almost surely, 2^{20117515277275} is an apocalyptic number.

20117515277275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20117515277275 is a deficient number, since it is larger than the sum of its proper divisors (6829286454533).

20117515277275 is a wasteful number, since it uses less digits than its factorization.

20117515277275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87472 (or 87467 counting only the distinct ones).

The product of its (nonzero) digits is 2401000, while the sum is 52.

The spelling of 20117515277275 in words is "twenty trillion, one hundred seventeen billion, five hundred fifteen million, two hundred seventy-seven thousand, two hundred seventy-five".