15621000148 has 24 divisors (see below), whose sum is σ = 29561756840. Its totient is φ = 7179770880.

The previous prime is 15621000121. The next prime is 15621000167. The reversal of 15621000148 is 84100012651.

15621000148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3152597904 + 12468402244 = 56148^2 + 111662^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 610713 + ... + 635776.

Almost surely, 2^15621000148 is an apocalyptic number.

It is an amenable number.

15621000148 is a deficient number, since it is larger than the sum of its proper divisors (13940756692).

15621000148 is a wasteful number, since it uses less digits than its factorization.

15621000148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246747 (or 1246745 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

Adding to 15621000148 its reverse (84100012651), we get a palindrome (99721012799).

The spelling of 15621000148 in words is "fifteen billion, six hundred twenty-one million, one hundred forty-eight", and thus it is an aban number.