15219948868 has 6 divisors (see below), whose sum is σ = 26634910526. Its totient is φ = 7609974432.

The previous prime is 15219948847. The next prime is 15219948871. The reversal of 15219948868 is 86884991251.

It can be written as a sum of positive squares in only one way, i.e., 11593259584 + 3626689284 = 107672^2 + 60222^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1902493605 + ... + 1902493612.

Almost surely, 2^15219948868 is an apocalyptic number.

It is an amenable number.

15219948868 is a deficient number, since it is larger than the sum of its proper divisors (11414961658).

15219948868 is a wasteful number, since it uses less digits than its factorization.

15219948868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804987221 (or 3804987219 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 61.

The spelling of 15219948868 in words is "fifteen billion, two hundred nineteen million, nine hundred forty-eight thousand, eight hundred sixty-eight".