38781056231247 has 64 divisors (see below), whose sum is σ = 57673236612096. Its totient is φ = 22979956546560.

The previous prime is 38781056231213. The next prime is 38781056231249. The reversal of 38781056231247 is 74213265018783.

It is a happy number.

38781056231247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38781056231247 - 2¹¹ = 38781056229199 is a prime.

It is a super-2 number, since 2×38781056231247² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38781056231249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2459626558 + ... + 2459642324.

It is an arithmetic number, because the mean of its divisors is an integer number (901144322064).

Almost surely, 2^{38781056231247} is an apocalyptic number.

38781056231247 is a deficient number, since it is larger than the sum of its proper divisors (18892180380849).

38781056231247 is a wasteful number, since it uses less digits than its factorization.

38781056231247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20640.

The product of its (nonzero) digits is 13547520, while the sum is 57.

The spelling of 38781056231247 in words is "thirty-eight trillion, seven hundred eighty-one billion, fifty-six million, two hundred thirty-one thousand, two hundred forty-seven".