38777483606437 has 2 divisors, whose sum is σ = 38777483606438. Its totient is φ = 38777483606436.

The previous prime is 38777483606413. The next prime is 38777483606441. The reversal of 38777483606437 is 73460638477783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34511383380321 + 4266100226116 = 5874639^2 + 2065454^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38777483606437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38777483606437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38777483606467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19388741803218 + 19388741803219.

It is an arithmetic number, because the mean of its divisors is an integer number (19388741803219).

Almost surely, 2^{38777483606437} is an apocalyptic number.

It is an amenable number.

38777483606437 is a deficient number, since it is larger than the sum of its proper divisors (1).

38777483606437 is an equidigital number, since it uses as much as digits as its factorization.

38777483606437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2389782528, while the sum is 73.

The spelling of 38777483606437 in words is "thirty-eight trillion, seven hundred seventy-seven billion, four hundred eighty-three million, six hundred six thousand, four hundred thirty-seven".