2103503405251 has 8 divisors (see below), whose sum is σ = 2141400717360. Its totient is φ = 2065680916992.

The previous prime is 2103503405221. The next prime is 2103503405273. The reversal of 2103503405251 is 1525043053012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2103503405251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2103503405221) 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, 18649230 + ... + 18761683.

It is an arithmetic number, because the mean of its divisors is an integer number (267675089670).

Almost surely, 2^{2103503405251} is an apocalyptic number.

2103503405251 is a deficient number, since it is larger than the sum of its proper divisors (37897312109).

2103503405251 is an equidigital number, since it uses as much as digits as its factorization.

2103503405251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37411925.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 2103503405251 its reverse (1525043053012), we get a palindrome (3628546458263).

The spelling of 2103503405251 in words is "two trillion, one hundred three billion, five hundred three million, four hundred five thousand, two hundred fifty-one".