38351489777 has 2 divisors, whose sum is σ = 38351489778. Its totient is φ = 38351489776.

The previous prime is 38351489753. The next prime is 38351489867. The reversal of 38351489777 is 77798415383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28856156641 + 9495333136 = 169871^2 + 97444^2 .

It is a cyclic number.

It is not a de Polignac number, because 38351489777 - 2⁸ = 38351489521 is a prime.

It is not a weakly prime, because it can be changed into another prime (38351489747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19175744888 + 19175744889.

It is an arithmetic number, because the mean of its divisors is an integer number (19175744889).

Almost surely, 2^38351489777 is an apocalyptic number.

It is an amenable number.

38351489777 is a deficient number, since it is larger than the sum of its proper divisors (1).

38351489777 is an equidigital number, since it uses as much as digits as its factorization.

38351489777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35562240, while the sum is 62.

The spelling of 38351489777 in words is "thirty-eight billion, three hundred fifty-one million, four hundred eighty-nine thousand, seven hundred seventy-seven".