15670743559641 has 9 divisors (see below), whose sum is σ = 22635535629109. Its totient is φ = 10447154455836.

The previous prime is 15670743559631. The next prime is 15670743559649. The reversal of 15670743559641 is 14695534707651.

The square root of 15670743559641 is 3958629.

It is a perfect power (a square), and thus also a powerful number.

15670743559641 is a `hidden beast` number, since 1 + 5 + 6 + 7 + 0 + 7 + 4 + 35 + 596 + 4 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 15670743559641 - 2¹¹ = 15670743557593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15670743559649) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11216116 + ... + 12535658.

Almost surely, 2^{15670743559641} is an apocalyptic number.

15670743559641 is the 3958629-th square number.

15670743559641 is the 1979315-th centered octagonal number.

It is an amenable number.

15670743559641 is a deficient number, since it is larger than the sum of its proper divisors (6964792069468).

15670743559641 is an frugal number, since it uses more digits than its factorization.

15670743559641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639092 (or 1319546 counting only the distinct ones).

The product of its (nonzero) digits is 95256000, while the sum is 63.

The spelling of 15670743559641 in words is "fifteen trillion, six hundred seventy billion, seven hundred forty-three million, five hundred fifty-nine thousand, six hundred forty-one".