387728672131 has 16 divisors (see below), whose sum is σ = 399575070720. Its totient is φ = 376088388480.

The previous prime is 387728672101. The next prime is 387728672143. The reversal of 387728672131 is 131276827783.

It is a cyclic number.

It is not a de Polignac number, because 387728672131 - 2²³ = 387720283523 is a prime.

It is a super-2 number, since 2×387728672131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387728672101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1356346 + ... + 1617136.

It is an arithmetic number, because the mean of its divisors is an integer number (24973441920).

Almost surely, 2^387728672131 is an apocalyptic number.

387728672131 is a deficient number, since it is larger than the sum of its proper divisors (11846398589).

387728672131 is a wasteful number, since it uses less digits than its factorization.

387728672131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261186.

The product of its digits is 4741632, while the sum is 55.

The spelling of 387728672131 in words is "three hundred eighty-seven billion, seven hundred twenty-eight million, six hundred seventy-two thousand, one hundred thirty-one".