20402103255 has 8 divisors (see below), whose sum is σ = 32643365232. Its totient is φ = 10881121728.

The previous prime is 20402103221. The next prime is 20402103277. The reversal of 20402103255 is 55230120402.

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

It is not a de Polignac number, because 20402103255 - 2¹⁵ = 20402070487 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 680070094 + ... + 680070123.

It is an arithmetic number, because the mean of its divisors is an integer number (4080420654).

Almost surely, 2^20402103255 is an apocalyptic number.

20402103255 is a deficient number, since it is larger than the sum of its proper divisors (12241261977).

20402103255 is a wasteful number, since it uses less digits than its factorization.

20402103255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360140225.

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 20402103255 its reverse (55230120402), we get a palindrome (75632223657).

The spelling of 20402103255 in words is "twenty billion, four hundred two million, one hundred three thousand, two hundred fifty-five".