38616913777 has 4 divisors (see below), whose sum is σ = 41587445620. Its totient is φ = 35646381936.

The previous prime is 38616913763. The next prime is 38616913789. The reversal of 38616913777 is 77731961683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77731961683 = 101 ⋅769623383.

It can be written as a sum of positive squares in 2 ways, for example, as 10887670336 + 27729243441 = 104344^2 + 166521^2 .

It is a cyclic number.

It is not a de Polignac number, because 38616913777 - 2⁷ = 38616913649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38616913177) 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, 1485265902 + ... + 1485265927.

It is an arithmetic number, because the mean of its divisors is an integer number (10396861405).

Almost surely, 2^38616913777 is an apocalyptic number.

It is an amenable number.

38616913777 is a deficient number, since it is larger than the sum of its proper divisors (2970531843).

38616913777 is a wasteful number, since it uses less digits than its factorization.

38616913777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970531842.

The product of its digits is 8001504, while the sum is 58.

The spelling of 38616913777 in words is "thirty-eight billion, six hundred sixteen million, nine hundred thirteen thousand, seven hundred seventy-seven".