15970216988 has 24 divisors (see below), whose sum is σ = 30556537200. Its totient is φ = 7243013120.

The previous prime is 15970216981. The next prime is 15970217009. The reversal of 15970216988 is 88961207951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15970216981) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 384431 + ... + 423942.

It is an arithmetic number, because the mean of its divisors is an integer number (1273189050).

Almost surely, 2^15970216988 is an apocalyptic number.

It is an amenable number.

15970216988 is a deficient number, since it is larger than the sum of its proper divisors (14586320212).

15970216988 is a wasteful number, since it uses less digits than its factorization.

15970216988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808837 (or 808835 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 56.

The spelling of 15970216988 in words is "fifteen billion, nine hundred seventy million, two hundred sixteen thousand, nine hundred eighty-eight".