38778047687811 has 8 divisors (see below), whose sum is σ = 51720135733264. Its totient is φ = 25843995717120.

The previous prime is 38778047687759. The next prime is 38778047687831. The reversal of 38778047687811 is 11878674087783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38778047687811 - 2⁹ = 38778047687299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38778047687831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2009007430 + ... + 2009026731.

It is an arithmetic number, because the mean of its divisors is an integer number (6465016966658).

Almost surely, 2^{38778047687811} is an apocalyptic number.

38778047687811 is a deficient number, since it is larger than the sum of its proper divisors (12942088045453).

38778047687811 is a wasteful number, since it uses less digits than its factorization.

38778047687811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4018037381.

The product of its (nonzero) digits is 708083712, while the sum is 75.

The spelling of 38778047687811 in words is "thirty-eight trillion, seven hundred seventy-eight billion, forty-seven million, six hundred eighty-seven thousand, eight hundred eleven".