12551441501 has 2 divisors, whose sum is σ = 12551441502. Its totient is φ = 12551441500.

The previous prime is 12551441473. The next prime is 12551441543. The reversal of 12551441501 is 10514415521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12542880025 + 8561476 = 111995^2 + 2926^2 .

It is an emirp because it is prime and its reverse (10514415521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12551441501 - 2¹⁸ = 12551179357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12551441101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6275720750 + 6275720751.

It is an arithmetic number, because the mean of its divisors is an integer number (6275720751).

Almost surely, 2^12551441501 is an apocalyptic number.

It is an amenable number.

12551441501 is a deficient number, since it is larger than the sum of its proper divisors (1).

12551441501 is an equidigital number, since it uses as much as digits as its factorization.

12551441501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4000, while the sum is 29.

The spelling of 12551441501 in words is "twelve billion, five hundred fifty-one million, four hundred forty-one thousand, five hundred one".