11901764689 has 2 divisors, whose sum is σ = 11901764690. Its totient is φ = 11901764688.

The previous prime is 11901764687. The next prime is 11901764723. The reversal of 11901764689 is 98646710911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6393601600 + 5508163089 = 79960^2 + 74217^2 .

It is a cyclic number.

It is not a de Polignac number, because 11901764689 - 2¹ = 11901764687 is a prime.

Together with 11901764687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11901764687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5950882344 + 5950882345.

It is an arithmetic number, because the mean of its divisors is an integer number (5950882345).

Almost surely, 2^11901764689 is an apocalyptic number.

It is an amenable number.

11901764689 is a deficient number, since it is larger than the sum of its proper divisors (1).

11901764689 is an equidigital number, since it uses as much as digits as its factorization.

11901764689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 52.

The spelling of 11901764689 in words is "eleven billion, nine hundred one million, seven hundred sixty-four thousand, six hundred eighty-nine".