38961793024581 has 16 divisors (see below), whose sum is σ = 61285523898368. Its totient is φ = 21545691994800.

The previous prime is 38961793024579. The next prime is 38961793024603. The reversal of 38961793024581 is 18542039716983.

It is a happy number.

It is not a de Polignac number, because 38961793024581 - 2¹ = 38961793024579 is a prime.

It is a super-2 number, since 2×38961793024581² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38961793024501) 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, 29924571565 + ... + 29924572866.

It is an arithmetic number, because the mean of its divisors is an integer number (3830345243648).

It is a 2-persistent number, because it is pandigital, and so is 2⋅38961793024581 = 77923586049162, but 3⋅38961793024581 = 116885379073743 is not.

Almost surely, 2^{38961793024581} is an apocalyptic number.

38961793024581 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

38961793024581 is a deficient number, since it is larger than the sum of its proper divisors (22323730873787).

38961793024581 is a wasteful number, since it uses less digits than its factorization.

38961793024581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59849144472.

The product of its (nonzero) digits is 78382080, while the sum is 66.

The spelling of 38961793024581 in words is "thirty-eight trillion, nine hundred sixty-one billion, seven hundred ninety-three million, twenty-four thousand, five hundred eighty-one".