15548220008 has 32 divisors (see below), whose sum is σ = 29343273960. Its totient is φ = 7723434240.

The previous prime is 15548220007. The next prime is 15548220047. The reversal of 15548220008 is 80002284551.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9742084804 + 5806135204 = 98702^2 + 76198^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15548220008.

It is not an unprimeable number, because it can be changed into a prime (15548220007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1612610 + ... + 1622222.

Almost surely, 2^15548220008 is an apocalyptic number.

It is an amenable number.

15548220008 is a deficient number, since it is larger than the sum of its proper divisors (13795053952).

15548220008 is a wasteful number, since it uses less digits than its factorization.

15548220008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10917 (or 10913 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 35.

The spelling of 15548220008 in words is "fifteen billion, five hundred forty-eight million, two hundred twenty thousand, eight".