15507216012 has 12 divisors (see below), whose sum is σ = 36183504056. Its totient is φ = 5169072000.

The previous prime is 15507215953. The next prime is 15507216013. The reversal of 15507216012 is 21061270551.

15507216012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (15507216013) 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 3 ways as a sum of consecutive naturals, for example, 646133989 + ... + 646134012.

Almost surely, 2^15507216012 is an apocalyptic number.

15507216012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15507216012 is an abundant number, since it is smaller than the sum of its proper divisors (20676288044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15507216012 is a wasteful number, since it uses less digits than its factorization.

15507216012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292268008 (or 1292268006 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 30.

Adding to 15507216012 its reverse (21061270551), we get a palindrome (36568486563).

The spelling of 15507216012 in words is "fifteen billion, five hundred seven million, two hundred sixteen thousand, twelve".