32220420155 has 32 divisors (see below), whose sum is σ = 49188902400. Its totient is φ = 20085444960.

The previous prime is 32220420137. The next prime is 32220420157. The reversal of 32220420155 is 55102402223.

It is not a de Polignac number, because 32220420155 - 2⁸ = 32220419899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32220420157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 835109 + ... + 872838.

It is an arithmetic number, because the mean of its divisors is an integer number (1537153200).

Almost surely, 2^32220420155 is an apocalyptic number.

32220420155 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

32220420155 is a deficient number, since it is larger than the sum of its proper divisors (16968482245).

32220420155 is a wasteful number, since it uses less digits than its factorization.

32220420155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707984 (or 1707970 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 32220420155 its reverse (55102402223), we get a palindrome (87322822378).

The spelling of 32220420155 in words is "thirty-two billion, two hundred twenty million, four hundred twenty thousand, one hundred fifty-five".