387271784641 has 12 divisors (see below), whose sum is σ = 457885077780. Its totient is φ = 326505483360.

The previous prime is 387271784629. The next prime is 387271784651. The reversal of 387271784641 is 146487172783.

It can be written as a sum of positive squares in 2 ways, for example, as 5051087041 + 382220697600 = 71071^2 + 618240^2 .

It is not a de Polignac number, because 387271784641 - 2⁷ = 387271784513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387271784651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64779846 + ... + 64785823.

It is an arithmetic number, because the mean of its divisors is an integer number (38157089815).

Almost surely, 2^387271784641 is an apocalyptic number.

It is an amenable number.

387271784641 is a deficient number, since it is larger than the sum of its proper divisors (70613293139).

387271784641 is a wasteful number, since it uses less digits than its factorization.

387271784641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129565744 (or 129565737 counting only the distinct ones).

The product of its digits is 12644352, while the sum is 58.

The spelling of 387271784641 in words is "three hundred eighty-seven billion, two hundred seventy-one million, seven hundred eighty-four thousand, six hundred forty-one".