15648520349 has 32 divisors (see below), whose sum is σ = 21323907072. Its totient is φ = 11106144000.

The previous prime is 15648520331. The next prime is 15648520361. The reversal of 15648520349 is 94302584651.

It is not a de Polignac number, because 15648520349 - 2¹² = 15648516253 is a prime.

It is a super-2 number, since 2×15648520349² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15648520399) 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 31 ways as a sum of consecutive naturals, for example, 152237 + ... + 233394.

It is an arithmetic number, because the mean of its divisors is an integer number (666372096).

Almost surely, 2^15648520349 is an apocalyptic number.

It is an amenable number.

15648520349 is a deficient number, since it is larger than the sum of its proper divisors (5675386723).

15648520349 is a wasteful number, since it uses less digits than its factorization.

15648520349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385697.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 15648520349 in words is "fifteen billion, six hundred forty-eight million, five hundred twenty thousand, three hundred forty-nine".