387432775811 has 24 divisors (see below), whose sum is σ = 421933591296. Its totient is φ = 354514890240.

The previous prime is 387432775783. The next prime is 387432775819. The reversal of 387432775811 is 118577234783.

It is a de Polignac number, because none of the positive numbers 2^k-387432775811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387432775819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34228925 + ... + 34240241.

It is an arithmetic number, because the mean of its divisors is an integer number (17580566304).

Almost surely, 2^387432775811 is an apocalyptic number.

387432775811 is a deficient number, since it is larger than the sum of its proper divisors (34500815485).

387432775811 is a wasteful number, since it uses less digits than its factorization.

387432775811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12879 (or 12842 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 56.

The spelling of 387432775811 in words is "three hundred eighty-seven billion, four hundred thirty-two million, seven hundred seventy-five thousand, eight hundred eleven".