11421661364 has 6 divisors (see below), whose sum is σ = 19987907394. Its totient is φ = 5710830680.

The previous prime is 11421661351. The next prime is 11421661369. The reversal of 11421661364 is 46316612411.

It can be written as a sum of positive squares in only one way, i.e., 11086405264 + 335256100 = 105292^2 + 18310^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421661369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1427707667 + ... + 1427707674.

It is an arithmetic number, because the mean of its divisors is an integer number (3331317899).

Almost surely, 2^11421661364 is an apocalyptic number.

It is an amenable number.

11421661364 is a deficient number, since it is larger than the sum of its proper divisors (8566246030).

11421661364 is a wasteful number, since it uses less digits than its factorization.

11421661364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855415345 (or 2855415343 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The spelling of 11421661364 in words is "eleven billion, four hundred twenty-one million, six hundred sixty-one thousand, three hundred sixty-four".