38382774977 has 2 divisors, whose sum is σ = 38382774978. Its totient is φ = 38382774976.

The previous prime is 38382774973. The next prime is 38382775001. The reversal of 38382774977 is 77947728383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37978604161 + 404170816 = 194881^2 + 20104^2 .

It is a cyclic number.

It is not a de Polignac number, because 38382774977 - 2² = 38382774973 is a prime.

It is not a weakly prime, because it can be changed into another prime (38382774973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19191387488 + 19191387489.

It is an arithmetic number, because the mean of its divisors is an integer number (19191387489).

Almost surely, 2^38382774977 is an apocalyptic number.

It is an amenable number.

38382774977 is a deficient number, since it is larger than the sum of its proper divisors (1).

38382774977 is an equidigital number, since it uses as much as digits as its factorization.

38382774977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 99574272, while the sum is 65.

The spelling of 38382774977 in words is "thirty-eight billion, three hundred eighty-two million, seven hundred seventy-four thousand, nine hundred seventy-seven".