38777440644773 has 2 divisors, whose sum is σ = 38777440644774. Its totient is φ = 38777440644772.

The previous prime is 38777440644703. The next prime is 38777440644779. The reversal of 38777440644773 is 37744604477783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32839753437604 + 5937687207169 = 5730598^2 + 2436737^2 .

It is a cyclic number.

It is not a de Polignac number, because 38777440644773 - 2²⁴ = 38777423867557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38777440644697 and 38777440644706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38777440644779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19388720322386 + 19388720322387.

It is an arithmetic number, because the mean of its divisors is an integer number (19388720322387).

Almost surely, 2^{38777440644773} is an apocalyptic number.

It is an amenable number.

38777440644773 is a deficient number, since it is larger than the sum of its proper divisors (1).

38777440644773 is an equidigital number, since it uses as much as digits as its factorization.

38777440644773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1858719744, while the sum is 71.

The spelling of 38777440644773 in words is "thirty-eight trillion, seven hundred seventy-seven billion, four hundred forty million, six hundred forty-four thousand, seven hundred seventy-three".