11721467419 has 2 divisors, whose sum is σ = 11721467420. Its totient is φ = 11721467418.

The previous prime is 11721467389. The next prime is 11721467447. The reversal of 11721467419 is 91476412711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11721467419 - 2⁹ = 11721466907 is a prime.

It is a super-2 number, since 2×11721467419² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11721467449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5860733709 + 5860733710.

It is an arithmetic number, because the mean of its divisors is an integer number (5860733710).

Almost surely, 2^11721467419 is an apocalyptic number.

11721467419 is a deficient number, since it is larger than the sum of its proper divisors (1).

11721467419 is an equidigital number, since it uses as much as digits as its factorization.

11721467419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 43.

The spelling of 11721467419 in words is "eleven billion, seven hundred twenty-one million, four hundred sixty-seven thousand, four hundred nineteen".