38388061331511 has 16 divisors (see below), whose sum is σ = 52835691955200. Its totient is φ = 24766251759360.

The previous prime is 38388061331509. The next prime is 38388061331539. The reversal of 38388061331511 is 11513316088383.

It is a happy number.

It is not a de Polignac number, because 38388061331511 - 2¹ = 38388061331509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38388061331611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7941340 + ... + 11825438.

It is an arithmetic number, because the mean of its divisors is an integer number (3302230747200).

Almost surely, 2^{38388061331511} is an apocalyptic number.

38388061331511 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

38388061331511 is a deficient number, since it is larger than the sum of its proper divisors (14447630623689).

38388061331511 is a wasteful number, since it uses less digits than its factorization.

38388061331511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3990406.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 38388061331511 in words is "thirty-eight trillion, three hundred eighty-eight billion, sixty-one million, three hundred thirty-one thousand, five hundred eleven".