15645054651 has 8 divisors (see below), whose sum is σ = 21957971520. Its totient is φ = 9881087112.

The previous prime is 15645054619. The next prime is 15645054653.

15645054651 is nontrivially palindromic in base 10.

15645054651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 15645054651 - 2⁵ = 15645054619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15645054653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137237265 + ... + 137237378.

It is an arithmetic number, because the mean of its divisors is an integer number (2744746440).

Almost surely, 2^15645054651 is an apocalyptic number.

15645054651 is a deficient number, since it is larger than the sum of its proper divisors (6312916869).

15645054651 is a wasteful number, since it uses less digits than its factorization.

15645054651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274474665.

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 15645054651 in words is "fifteen billion, six hundred forty-five million, fifty-four thousand, six hundred fifty-one".