11995620249 has 8 divisors (see below), whose sum is σ = 15995825280. Its totient is φ = 7996247696.

The previous prime is 11995620229. The next prime is 11995620269. The reversal of 11995620249 is 94202659911.

It is an interprime number because it is at equal distance from previous prime (11995620229) and next prime (11995620269).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11995620249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11995620198 and 11995620207.

It is not an unprimeable number, because it can be changed into a prime (11995620229) 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, 173682 + ... + 232715.

It is an arithmetic number, because the mean of its divisors is an integer number (1999478160).

Almost surely, 2^11995620249 is an apocalyptic number.

It is an amenable number.

11995620249 is a deficient number, since it is larger than the sum of its proper divisors (4000205031).

11995620249 is an equidigital number, since it uses as much as digits as its factorization.

11995620249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416239.

The product of its (nonzero) digits is 349920, while the sum is 48.

The spelling of 11995620249 in words is "eleven billion, nine hundred ninety-five million, six hundred twenty thousand, two hundred forty-nine".