38387734054581 has 16 divisors (see below), whose sum is σ = 51693464249856. Its totient is φ = 25338107237616.

The previous prime is 38387734054577. The next prime is 38387734054597. The reversal of 38387734054581 is 18545043778383.

It is not a de Polignac number, because 38387734054581 - 2² = 38387734054577 is a prime.

It is a super-2 number, since 2×38387734054581² (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 (38387734054561) 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, 149115735 + ... + 149372948.

It is an arithmetic number, because the mean of its divisors is an integer number (3230841515616).

Almost surely, 2^{38387734054581} is an apocalyptic number.

It is an amenable number.

38387734054581 is a deficient number, since it is larger than the sum of its proper divisors (13305730195275).

38387734054581 is a wasteful number, since it uses less digits than its factorization.

38387734054581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298489112.

The product of its (nonzero) digits is 270950400, while the sum is 66.

The spelling of 38387734054581 in words is "thirty-eight trillion, three hundred eighty-seven billion, seven hundred thirty-four million, fifty-four thousand, five hundred eighty-one".