33155220255 has 32 divisors (see below), whose sum is σ = 53753172480. Its totient is φ = 17448366720.

The previous prime is 33155220247. The next prime is 33155220257. The reversal of 33155220255 is 55202255133.

It is not a de Polignac number, because 33155220255 - 2³ = 33155220247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33155220257) 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, 1028685 + ... + 1060425.

It is an arithmetic number, because the mean of its divisors is an integer number (1679786640).

Almost surely, 2^33155220255 is an apocalyptic number.

33155220255 is a deficient number, since it is larger than the sum of its proper divisors (20597952225).

33155220255 is a wasteful number, since it uses less digits than its factorization.

33155220255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32671.

The product of its (nonzero) digits is 45000, while the sum is 33.

Adding to 33155220255 its reverse (55202255133), we get a palindrome (88357475388).

The spelling of 33155220255 in words is "thirty-three billion, one hundred fifty-five million, two hundred twenty thousand, two hundred fifty-five".