15676440249 has 8 divisors (see below), whose sum is σ = 20915982720. Its totient is φ = 10443928976.

The previous prime is 15676440233. The next prime is 15676440317. The reversal of 15676440249 is 94204467651.

It is a happy number.

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 15676440249 - 2⁴ = 15676440233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15676440198 and 15676440207.

It is not an unprimeable number, because it can be changed into a prime (15676440149) 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, 1752594 + ... + 1761515.

It is an arithmetic number, because the mean of its divisors is an integer number (2614497840).

Almost surely, 2^15676440249 is an apocalyptic number.

It is an amenable number.

15676440249 is a deficient number, since it is larger than the sum of its proper divisors (5239542471).

15676440249 is a wasteful number, since it uses less digits than its factorization.

15676440249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3515599.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 15676440249 in words is "fifteen billion, six hundred seventy-six million, four hundred forty thousand, two hundred forty-nine".