385543751641 has 4 divisors (see below), whose sum is σ = 385546310784. Its totient is φ = 385541192500.

The previous prime is 385543751611. The next prime is 385543751647. The reversal of 385543751641 is 146157345583.

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, and also an emirpimes, since its reverse is a distinct semiprime: 146157345583 = 293 ⋅498830531.

It is a cyclic number.

It is not a de Polignac number, because 385543751641 - 2⁵ = 385543751609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385543751647) 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, 1038445 + ... + 1359946.

It is an arithmetic number, because the mean of its divisors is an integer number (96386577696).

Almost surely, 2^385543751641 is an apocalyptic number.

It is an amenable number.

385543751641 is a deficient number, since it is larger than the sum of its proper divisors (2559143).

385543751641 is a wasteful number, since it uses less digits than its factorization.

385543751641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559142.

The product of its digits is 6048000, while the sum is 52.

The spelling of 385543751641 in words is "three hundred eighty-five billion, five hundred forty-three million, seven hundred fifty-one thousand, six hundred forty-one".