11777621465 has 16 divisors (see below), whose sum is σ = 14407371072. Its totient is φ = 9240521664.

The previous prime is 11777621461. The next prime is 11777621467. The reversal of 11777621465 is 56412677711.

11777621465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11777621465 - 2² = 11777621461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11777621461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1394 + ... + 153483.

It is an arithmetic number, because the mean of its divisors is an integer number (900460692).

Almost surely, 2^11777621465 is an apocalyptic number.

It is an amenable number.

11777621465 is a deficient number, since it is larger than the sum of its proper divisors (2629749607).

11777621465 is a wasteful number, since it uses less digits than its factorization.

11777621465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155176.

The product of its digits is 493920, while the sum is 47.

The spelling of 11777621465 in words is "eleven billion, seven hundred seventy-seven million, six hundred twenty-one thousand, four hundred sixty-five".