15712201613649 has 16 divisors (see below), whose sum is σ = 21021264460800. Its totient is φ = 10439006886096.

The previous prime is 15712201613629. The next prime is 15712201613707. The reversal of 15712201613649 is 94631610221751.

It is not a de Polignac number, because 15712201613649 - 2¹² = 15712201609553 is a prime.

It is a super-4 number, since 4×15712201613649⁴ (a number of 54 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15712201613598 and 15712201613607.

It is not an unprimeable number, because it can be changed into a prime (15712201613629) 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, 2919069 + ... + 6320234.

It is an arithmetic number, because the mean of its divisors is an integer number (1313829028800).

Almost surely, 2^{15712201613649} is an apocalyptic number.

It is an amenable number.

15712201613649 is a deficient number, since it is larger than the sum of its proper divisors (5309062847151).

15712201613649 is a wasteful number, since it uses less digits than its factorization.

15712201613649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9241244.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 15712201613649 in words is "fifteen trillion, seven hundred twelve billion, two hundred one million, six hundred thirteen thousand, six hundred forty-nine".