387781677423 has 32 divisors (see below), whose sum is σ = 657040204800. Its totient is φ = 221427991008.

The previous prime is 387781677421. The next prime is 387781677443. The reversal of 387781677423 is 324776187783.

387781677423 is a `hidden beast` number, since 3 + 8 + 77 + 81 + 67 + 7 + 423 = 666.

It is not a de Polignac number, because 387781677423 - 2¹ = 387781677421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387781677421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 487683 + ... + 1006676.

It is an arithmetic number, because the mean of its divisors is an integer number (20532506400).

Almost surely, 2^387781677423 is an apocalyptic number.

387781677423 is a deficient number, since it is larger than the sum of its proper divisors (269258527377).

387781677423 is a wasteful number, since it uses less digits than its factorization.

387781677423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495748 (or 1495742 counting only the distinct ones).

The product of its digits is 66382848, while the sum is 63.

The spelling of 387781677423 in words is "three hundred eighty-seven billion, seven hundred eighty-one million, six hundred seventy-seven thousand, four hundred twenty-three".