12723916501 has 2 divisors, whose sum is σ = 12723916502. Its totient is φ = 12723916500.

The previous prime is 12723916493. The next prime is 12723916529. The reversal of 12723916501 is 10561932721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9237132100 + 3486784401 = 96110^2 + 59049^2 .

It is a cyclic number.

It is not a de Polignac number, because 12723916501 - 2³ = 12723916493 is a prime.

It is a super-2 number, since 2×12723916501² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12723916531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361958250 + 6361958251.

It is an arithmetic number, because the mean of its divisors is an integer number (6361958251).

Almost surely, 2^12723916501 is an apocalyptic number.

It is an amenable number.

12723916501 is a deficient number, since it is larger than the sum of its proper divisors (1).

12723916501 is an equidigital number, since it uses as much as digits as its factorization.

12723916501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 12723916501 in words is "twelve billion, seven hundred twenty-three million, nine hundred sixteen thousand, five hundred one".