6354728533681 has 8 divisors (see below), whose sum is σ = 6932452723200. Its totient is φ = 5777007943440.

The previous prime is 6354728533679. The next prime is 6354728533691. The reversal of 6354728533681 is 1863358274536.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6354728533681 - 2¹ = 6354728533679 is a prime.

It is a super-2 number, since 2×6354728533681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6354728533631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3909360 + ... + 5290798.

It is an arithmetic number, because the mean of its divisors is an integer number (866556590400).

Almost surely, 2^{6354728533681} is an apocalyptic number.

It is an amenable number.

6354728533681 is a deficient number, since it is larger than the sum of its proper divisors (577724189519).

6354728533681 is a wasteful number, since it uses less digits than its factorization.

6354728533681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799639.

The product of its digits is 87091200, while the sum is 61.

The spelling of 6354728533681 in words is "six trillion, three hundred fifty-four billion, seven hundred twenty-eight million, five hundred thirty-three thousand, six hundred eighty-one".