15982257049 has 12 divisors (see below), whose sum is σ = 18133964800. Its totient is φ = 14060633400.

The previous prime is 15982257047. The next prime is 15982257061. The reversal of 15982257049 is 94075228951.

It is not a de Polignac number, because 15982257049 - 2¹ = 15982257047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15982256987 and 15982257005.

It is not an unprimeable number, because it can be changed into a prime (15982257047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2126649 + ... + 2134150.

Almost surely, 2^15982257049 is an apocalyptic number.

It is an amenable number.

15982257049 is a deficient number, since it is larger than the sum of its proper divisors (2151707751).

15982257049 is a wasteful number, since it uses less digits than its factorization.

15982257049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260852 (or 4260841 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 15982257049 in words is "fifteen billion, nine hundred eighty-two million, two hundred fifty-seven thousand, forty-nine".