20003351655 has 32 divisors (see below), whose sum is σ = 36779678208. Its totient is φ = 9093859200.

The previous prime is 20003351653. The next prime is 20003351717. The reversal of 20003351655 is 55615330002.

It is not a de Polignac number, because 20003351655 - 2¹ = 20003351653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003351651) 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, 507261 + ... + 545270.

It is an arithmetic number, because the mean of its divisors is an integer number (1149364944).

Almost surely, 2^20003351655 is an apocalyptic number.

20003351655 is a deficient number, since it is larger than the sum of its proper divisors (16776326553).

20003351655 is a wasteful number, since it uses less digits than its factorization.

20003351655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052727.

The product of its (nonzero) digits is 13500, while the sum is 30.

Adding to 20003351655 its reverse (55615330002), we get a palindrome (75618681657).

The spelling of 20003351655 in words is "twenty billion, three million, three hundred fifty-one thousand, six hundred fifty-five".