11764389989 has 4 divisors (see below), whose sum is σ = 12833880000. Its totient is φ = 10694899980.

The previous prime is 11764389979. The next prime is 11764390003. The reversal of 11764389989 is 98998346711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11764389989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11764389979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534744989 + ... + 534745010.

It is an arithmetic number, because the mean of its divisors is an integer number (3208470000).

Almost surely, 2^11764389989 is an apocalyptic number.

It is an amenable number.

11764389989 is a deficient number, since it is larger than the sum of its proper divisors (1069490011).

11764389989 is a wasteful number, since it uses less digits than its factorization.

11764389989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069490010.

The product of its digits is 23514624, while the sum is 65.

The spelling of 11764389989 in words is "eleven billion, seven hundred sixty-four million, three hundred eighty-nine thousand, nine hundred eighty-nine".