12641420351 has 4 divisors (see below), whose sum is σ = 14447337552. Its totient is φ = 10835503152.

The previous prime is 12641420263. The next prime is 12641420369. The reversal of 12641420351 is 15302414621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12641420351 - 2¹⁰ = 12641419327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12641420381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902958590 + ... + 902958603.

It is an arithmetic number, because the mean of its divisors is an integer number (3611834388).

Almost surely, 2^12641420351 is an apocalyptic number.

12641420351 is a deficient number, since it is larger than the sum of its proper divisors (1805917201).

12641420351 is an equidigital number, since it uses as much as digits as its factorization.

12641420351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805917200.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 12641420351 its reverse (15302414621), we get a palindrome (27943834972).

The spelling of 12641420351 in words is "twelve billion, six hundred forty-one million, four hundred twenty thousand, three hundred fifty-one".