386987777711 has 4 divisors (see below), whose sum is σ = 388952182872. Its totient is φ = 385023372552.

The previous prime is 386987777651. The next prime is 386987777747. The reversal of 386987777711 is 117777789683.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386987777711 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 (386987774711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 982202285 + ... + 982202678.

It is an arithmetic number, because the mean of its divisors is an integer number (97238045718).

Almost surely, 2^386987777711 is an apocalyptic number.

386987777711 is a deficient number, since it is larger than the sum of its proper divisors (1964405161).

386987777711 is a wasteful number, since it uses less digits than its factorization.

386987777711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964405160.

The product of its digits is 174254976, while the sum is 71.

The spelling of 386987777711 in words is "three hundred eighty-six billion, nine hundred eighty-seven million, seven hundred seventy-seven thousand, seven hundred eleven".