11722609487 has 2 divisors, whose sum is σ = 11722609488. Its totient is φ = 11722609486.

The previous prime is 11722609427. The next prime is 11722609489. The reversal of 11722609487 is 78490622711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11722609487 - 2¹⁰ = 11722608463 is a prime.

Together with 11722609489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11722609489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5861304743 + 5861304744.

It is an arithmetic number, because the mean of its divisors is an integer number (5861304744).

Almost surely, 2^11722609487 is an apocalyptic number.

11722609487 is a deficient number, since it is larger than the sum of its proper divisors (1).

11722609487 is an equidigital number, since it uses as much as digits as its factorization.

11722609487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 11722609487 in words is "eleven billion, seven hundred twenty-two million, six hundred nine thousand, four hundred eighty-seven".