20150071617 has 12 divisors (see below), whose sum is σ = 29092411824. Its totient is φ = 12400043760.

The previous prime is 20150071607. The next prime is 20150071619. The reversal of 20150071617 is 71617005102.

It is not a de Polignac number, because 20150071617 - 2¹⁰ = 20150070593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20150071619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19871359 + ... + 19872372.

It is an arithmetic number, because the mean of its divisors is an integer number (2424367652).

Almost surely, 2^20150071617 is an apocalyptic number.

It is an amenable number.

20150071617 is a deficient number, since it is larger than the sum of its proper divisors (8942340207).

20150071617 is a wasteful number, since it uses less digits than its factorization.

20150071617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39743760 (or 39743747 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 30.

Adding to 20150071617 its reverse (71617005102), we get a palindrome (91767076719).

The spelling of 20150071617 in words is "twenty billion, one hundred fifty million, seventy-one thousand, six hundred seventeen".