15672861749 has 6 divisors (see below), whose sum is σ = 15829309314. Its totient is φ = 15516439200.

The previous prime is 15672861727. The next prime is 15672861811. The reversal of 15672861749 is 94716827651.

It is a happy number.

15672861749 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 3 ways, for example, as 11624721124 + 4048140625 = 107818^2 + 63625^2 .

It is not a de Polignac number, because 15672861749 - 2²⁸ = 15404426293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15672861694 and 15672861703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15672861049) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1251929 + ... + 1264385.

It is an arithmetic number, because the mean of its divisors is an integer number (2638218219).

Almost surely, 2^15672861749 is an apocalyptic number.

It is an amenable number.

15672861749 is a deficient number, since it is larger than the sum of its proper divisors (156447565).

15672861749 is an frugal number, since it uses more digits than its factorization.

15672861749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25015 (or 12558 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 56.

The spelling of 15672861749 in words is "fifteen billion, six hundred seventy-two million, eight hundred sixty-one thousand, seven hundred forty-nine".