76776770386 has 4 divisors (see below), whose sum is σ = 115165155582. Its totient is φ = 38388385192.

The previous prime is 76776770381. The next prime is 76776770393. The reversal of 76776770386 is 68307767767.

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

It can be written as a sum of positive squares in only one way, i.e., 49009547161 + 27767223225 = 221381^2 + 166635^2 .

It is not an unprimeable number, because it can be changed into a prime (76776770381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19194192595 + ... + 19194192598.

Almost surely, 2^76776770386 is an apocalyptic number.

76776770386 is a deficient number, since it is larger than the sum of its proper divisors (38388385196).

76776770386 is a wasteful number, since it uses less digits than its factorization.

76776770386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38388385195.

The product of its (nonzero) digits is 87127488, while the sum is 64.

The spelling of 76776770386 in words is "seventy-six billion, seven hundred seventy-six million, seven hundred seventy thousand, three hundred eighty-six".