220155155116509 has 32 divisors (see below), whose sum is σ = 299325038826240. Its totient is φ = 143910052872192.

The previous prime is 220155155116433. The next prime is 220155155116541. The reversal of 220155155116509 is 905611551551022.

It is not a de Polignac number, because 220155155116509 - 2¹⁵ = 220155155083741 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220155155116549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14563797 + ... + 25542405.

It is an arithmetic number, because the mean of its divisors is an integer number (9353907463320).

Almost surely, 2^{220155155116509} is an apocalyptic number.

It is an amenable number.

220155155116509 is a deficient number, since it is larger than the sum of its proper divisors (79169883709731).

220155155116509 is a wasteful number, since it uses less digits than its factorization.

220155155116509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10979349.

The product of its (nonzero) digits is 675000, while the sum is 48.

The spelling of 220155155116509 in words is "two hundred twenty trillion, one hundred fifty-five billion, one hundred fifty-five million, one hundred sixteen thousand, five hundred nine".