38773627681 has 4 divisors (see below), whose sum is σ = 38783853892. Its totient is φ = 38763401472.

The previous prime is 38773627679. The next prime is 38773627733. The reversal of 38773627681 is 18672637783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18672637783 = 23981 ⋅778643.

It can be written as a sum of positive squares in 2 ways, for example, as 7838446225 + 30935181456 = 88535^2 + 175884^2 .

It is a cyclic number.

It is not a de Polignac number, because 38773627681 - 2¹ = 38773627679 is a prime.

It is a super-2 number, since 2×38773627681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38773627181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5107416 + ... + 5115001.

It is an arithmetic number, because the mean of its divisors is an integer number (9695963473).

Almost surely, 2^38773627681 is an apocalyptic number.

It is an amenable number.

38773627681 is a deficient number, since it is larger than the sum of its proper divisors (10226211).

38773627681 is a wasteful number, since it uses less digits than its factorization.

38773627681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10226210.

The product of its digits is 14224896, while the sum is 58.

The spelling of 38773627681 in words is "thirty-eight billion, seven hundred seventy-three million, six hundred twenty-seven thousand, six hundred eighty-one".