15045220616 has 8 divisors (see below), whose sum is σ = 28209788670. Its totient is φ = 7522610304.

The previous prime is 15045220613. The next prime is 15045220627. The reversal of 15045220616 is 61602254051.

It can be written as a sum of positive squares in only one way, i.e., 13748500516 + 1296720100 = 117254^2 + 36010^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×15045220616² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15045220613) 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 as a sum of consecutive naturals, namely, 940326281 + ... + 940326296.

Almost surely, 2^15045220616 is an apocalyptic number.

It is an amenable number.

15045220616 is a deficient number, since it is larger than the sum of its proper divisors (13164568054).

15045220616 is a wasteful number, since it uses less digits than its factorization.

15045220616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880652583 (or 1880652579 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 15045220616 its reverse (61602254051), we get a palindrome (76647474667).

The spelling of 15045220616 in words is "fifteen billion, forty-five million, two hundred twenty thousand, six hundred sixteen".