38811885482781 has 16 divisors (see below), whose sum is σ = 59053119054400. Its totient is φ = 25175277069264.

The previous prime is 38811885482771. The next prime is 38811885482813. The reversal of 38811885482781 is 18728458811883.

It is a happy number.

38811885482781 is a `hidden beast` number, since 3 + 8 + 8 + 1 + 1 + 8 + 8 + 548 + 2 + 78 + 1 = 666.

It is not a de Polignac number, because 38811885482781 - 2⁹ = 38811885482269 is a prime.

It is a super-2 number, since 2×38811885482781² (a number of 28 digits) contains 22 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 (38811885482771) 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, 19425367111 + ... + 19425369108.

It is an arithmetic number, because the mean of its divisors is an integer number (3690819940900).

Almost surely, 2^{38811885482781} is an apocalyptic number.

It is an amenable number.

38811885482781 is a deficient number, since it is larger than the sum of its proper divisors (20241233571619).

38811885482781 is a wasteful number, since it uses less digits than its factorization.

38811885482781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38850736265 (or 38850736259 counting only the distinct ones).

The product of its digits is 220200960, while the sum is 72.

The spelling of 38811885482781 in words is "thirty-eight trillion, eight hundred eleven billion, eight hundred eighty-five million, four hundred eighty-two thousand, seven hundred eighty-one".