11421693569 has 16 divisors (see below), whose sum is σ = 13428253440. Its totient is φ = 9577666560.

The previous prime is 11421693551. The next prime is 11421693571. The reversal of 11421693569 is 96539612411.

It is a happy number.

It is not a de Polignac number, because 11421693569 - 2⁸ = 11421693313 is a prime.

It is a super-2 number, since 2×11421693569² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11421693169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173144 + ... + 229830.

It is an arithmetic number, because the mean of its divisors is an integer number (839265840).

Almost surely, 2^11421693569 is an apocalyptic number.

It is an amenable number.

11421693569 is a deficient number, since it is larger than the sum of its proper divisors (2006559871).

11421693569 is a wasteful number, since it uses less digits than its factorization.

11421693569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58120.

The product of its digits is 349920, while the sum is 47.

The spelling of 11421693569 in words is "eleven billion, four hundred twenty-one million, six hundred ninety-three thousand, five hundred sixty-nine".