20855512363 has 8 divisors (see below), whose sum is σ = 23836280832. Its totient is φ = 17875096296.

The previous prime is 20855512357. The next prime is 20855512367. The reversal of 20855512363 is 36321555802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20855512363 - 2⁹ = 20855511851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20855512367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54006 + ... + 211252.

It is an arithmetic number, because the mean of its divisors is an integer number (2979535104).

Almost surely, 2^20855512363 is an apocalyptic number.

20855512363 is a deficient number, since it is larger than the sum of its proper divisors (2980768469).

20855512363 is a wasteful number, since it uses less digits than its factorization.

20855512363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176201.

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 20855512363 in words is "twenty billion, eight hundred fifty-five million, five hundred twelve thousand, three hundred sixty-three".