11935561969 has 8 divisors (see below), whose sum is σ = 12192150528. Its totient is φ = 11679083520.

The previous prime is 11935561951. The next prime is 11935561991. The reversal of 11935561969 is 96916553911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11935561969 - 2⁹ = 11935561457 is a prime.

It is a super-2 number, since 2×11935561969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11935561919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214129 + ... + 264049.

It is an arithmetic number, because the mean of its divisors is an integer number (1524018816).

Almost surely, 2^11935561969 is an apocalyptic number.

It is an amenable number.

11935561969 is a deficient number, since it is larger than the sum of its proper divisors (256588559).

11935561969 is an equidigital number, since it uses as much as digits as its factorization.

11935561969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55055.

The product of its digits is 1968300, while the sum is 55.

The spelling of 11935561969 in words is "eleven billion, nine hundred thirty-five million, five hundred sixty-one thousand, nine hundred sixty-nine".