387606631877 has 4 divisors (see below), whose sum is σ = 388368138540. Its totient is φ = 386845125216.

The previous prime is 387606631861. The next prime is 387606631889. The reversal of 387606631877 is 778136606783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162222867361 + 225383764516 = 402769^2 + 474746^2 .

It is a cyclic number.

It is not a de Polignac number, because 387606631877 - 2⁴ = 387606631861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387606631807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380752568 + ... + 380753585.

It is an arithmetic number, because the mean of its divisors is an integer number (97092034635).

Almost surely, 2^387606631877 is an apocalyptic number.

It is an amenable number.

387606631877 is a deficient number, since it is larger than the sum of its proper divisors (761506663).

387606631877 is an equidigital number, since it uses as much as digits as its factorization.

387606631877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761506662.

The product of its (nonzero) digits is 42674688, while the sum is 62.

The spelling of 387606631877 in words is "three hundred eighty-seven billion, six hundred six million, six hundred thirty-one thousand, eight hundred seventy-seven".