38873388821 has 2 divisors, whose sum is σ = 38873388822. Its totient is φ = 38873388820.

The previous prime is 38873388817. The next prime is 38873388833. The reversal of 38873388821 is 12888337883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31184028100 + 7689360721 = 176590^2 + 87689^2 .

It is a cyclic number.

It is not a de Polignac number, because 38873388821 - 2² = 38873388817 is a prime.

It is a super-2 number, since 2×38873388821² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38873888821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19436694410 + 19436694411.

It is an arithmetic number, because the mean of its divisors is an integer number (19436694411).

Almost surely, 2^38873388821 is an apocalyptic number.

It is an amenable number.

38873388821 is a deficient number, since it is larger than the sum of its proper divisors (1).

38873388821 is an equidigital number, since it uses as much as digits as its factorization.

38873388821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12386304, while the sum is 59.

The spelling of 38873388821 in words is "thirty-eight billion, eight hundred seventy-three million, three hundred eighty-eight thousand, eight hundred twenty-one".