15970216989 has 16 divisors (see below), whose sum is σ = 21426772032. Its totient is φ = 10580295168.

The previous prime is 15970216981. The next prime is 15970217009. The reversal of 15970216989 is 98961207951.

It is not a de Polignac number, because 15970216989 - 2³ = 15970216981 is a prime.

It is a super-2 number, since 2×15970216989² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1339834 + ... + 1351700.

It is an arithmetic number, because the mean of its divisors is an integer number (1339173252).

Almost surely, 2^15970216989 is an apocalyptic number.

It is an amenable number.

15970216989 is a deficient number, since it is larger than the sum of its proper divisors (5456555043).

15970216989 is a wasteful number, since it uses less digits than its factorization.

15970216989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14636.

The product of its (nonzero) digits is 2449440, while the sum is 57.

The spelling of 15970216989 in words is "fifteen billion, nine hundred seventy million, two hundred sixteen thousand, nine hundred eighty-nine".