4281640181657 has 4 divisors (see below), whose sum is σ = 4335838158720. Its totient is φ = 4227442204596.

The previous prime is 4281640181639. The next prime is 4281640181671. The reversal of 4281640181657 is 7561810461824.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4281640181657 - 2²⁰ = 4281639133081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4281640181599 and 4281640181608.

It is not an unprimeable number, because it can be changed into a prime (4281640181627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27098988413 + ... + 27098988570.

It is an arithmetic number, because the mean of its divisors is an integer number (1083959539680).

Almost surely, 2^{4281640181657} is an apocalyptic number.

It is an amenable number.

4281640181657 is a deficient number, since it is larger than the sum of its proper divisors (54197977063).

4281640181657 is an equidigital number, since it uses as much as digits as its factorization.

4281640181657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54197977062.

The product of its (nonzero) digits is 2580480, while the sum is 53.

The spelling of 4281640181657 in words is "four trillion, two hundred eighty-one billion, six hundred forty million, one hundred eighty-one thousand, six hundred fifty-seven".