11994209651 has 8 divisors (see below), whose sum is σ = 12318274800. Its totient is φ = 11674170400.

The previous prime is 11994209627. The next prime is 11994209653. The reversal of 11994209651 is 15690249911.

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 11994209651 - 2¹⁰ = 11994208627 is a prime.

It is a super-2 number, since 2×11994209651² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11994209596 and 11994209605.

It is not an unprimeable number, because it can be changed into a prime (11994209653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000436 + ... + 1012353.

It is an arithmetic number, because the mean of its divisors is an integer number (1539784350).

Almost surely, 2^11994209651 is an apocalyptic number.

11994209651 is a deficient number, since it is larger than the sum of its proper divisors (324065149).

11994209651 is a wasteful number, since it uses less digits than its factorization.

11994209651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012949.

The product of its (nonzero) digits is 174960, while the sum is 47.

The spelling of 11994209651 in words is "eleven billion, nine hundred ninety-four million, two hundred nine thousand, six hundred fifty-one".