38855785863511 has 4 divisors (see below), whose sum is σ = 38869006617000. Its totient is φ = 38842565110024.

The previous prime is 38855785863509. The next prime is 38855785863529. The reversal of 38855785863511 is 11536858755883.

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

It is a cyclic number.

It is not a de Polignac number, because 38855785863511 - 2¹ = 38855785863509 is a prime.

It is a super-6 number, since 6×38855785863511⁶ (a number of 83 digits) contains 666666 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38855785863581) 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, 6610372336 + ... + 6610378213.

It is an arithmetic number, because the mean of its divisors is an integer number (9717251654250).

Almost surely, 2^{38855785863511} is an apocalyptic number.

38855785863511 is a deficient number, since it is larger than the sum of its proper divisors (13220753489).

38855785863511 is a wasteful number, since it uses less digits than its factorization.

38855785863511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13220753488.

The product of its digits is 967680000, while the sum is 73.

The spelling of 38855785863511 in words is "thirty-eight trillion, eight hundred fifty-five billion, seven hundred eighty-five million, eight hundred sixty-three thousand, five hundred eleven".