10503420251 has 8 divisors (see below), whose sum is σ = 10898509440. Its totient is φ = 10114184448.

The previous prime is 10503420247. The next prime is 10503420259. The reversal of 10503420251 is 15202430501.

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 10503420251 - 2² = 10503420247 is a prime.

It is a super-2 number, since 2×10503420251² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10503420259) 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, 1459691 + ... + 1466868.

It is an arithmetic number, because the mean of its divisors is an integer number (1362313680).

Almost surely, 2^10503420251 is an apocalyptic number.

10503420251 is a deficient number, since it is larger than the sum of its proper divisors (395089189).

10503420251 is an equidigital number, since it uses as much as digits as its factorization.

10503420251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2926693.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 10503420251 its reverse (15202430501), we get a palindrome (25705850752).

The spelling of 10503420251 in words is "ten billion, five hundred three million, four hundred twenty thousand, two hundred fifty-one".