255021651403 has 8 divisors (see below), whose sum is σ = 255845640960. Its totient is φ = 254198293800.

The previous prime is 255021651383. The next prime is 255021651407. The reversal of 255021651403 is 304156120552.

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 255021651403 - 2¹⁷ = 255021520331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255021651407) 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, 657178 + ... + 970528.

It is an arithmetic number, because the mean of its divisors is an integer number (31980705120).

Almost surely, 2^255021651403 is an apocalyptic number.

255021651403 is a deficient number, since it is larger than the sum of its proper divisors (823989557).

255021651403 is a wasteful number, since it uses less digits than its factorization.

255021651403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315977.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 255021651403 its reverse (304156120552), we get a palindrome (559177771955).

The spelling of 255021651403 in words is "two hundred fifty-five billion, twenty-one million, six hundred fifty-one thousand, four hundred three".