38720772782385 has 16 divisors (see below), whose sum is σ = 62825817248640. Its totient is φ = 20360218551680.

The previous prime is 38720772782371. The next prime is 38720772782441. The reversal of 38720772782385 is 58328727702783.

It is not a de Polignac number, because 38720772782385 - 2¹⁴ = 38720772766001 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18178765500 + ... + 18178767629.

It is an arithmetic number, because the mean of its divisors is an integer number (3926613578040).

Almost surely, 2^{38720772782385} is an apocalyptic number.

It is an amenable number.

38720772782385 is a deficient number, since it is larger than the sum of its proper divisors (24105044466255).

38720772782385 is a wasteful number, since it uses less digits than its factorization.

38720772782385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36357533208.

The product of its (nonzero) digits is 442552320, while the sum is 69.

The spelling of 38720772782385 in words is "thirty-eight trillion, seven hundred twenty billion, seven hundred seventy-two million, seven hundred eighty-two thousand, three hundred eighty-five".