15641367649 has 8 divisors (see below), whose sum is σ = 16322826240. Its totient is φ = 14960025696.

The previous prime is 15641367647. The next prime is 15641367653. The reversal of 15641367649 is 94676314651.

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 15641367649 - 2¹ = 15641367647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15641367596 and 15641367605.

It is not an unprimeable number, because it can be changed into a prime (15641367647) 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, 349837 + ... + 392005.

It is an arithmetic number, because the mean of its divisors is an integer number (2040353280).

Almost surely, 2^15641367649 is an apocalyptic number.

It is an amenable number.

15641367649 is a deficient number, since it is larger than the sum of its proper divisors (681458591).

15641367649 is a wasteful number, since it uses less digits than its factorization.

15641367649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58319.

The product of its digits is 3265920, while the sum is 52.

The spelling of 15641367649 in words is "fifteen billion, six hundred forty-one million, three hundred sixty-seven thousand, six hundred forty-nine".