38777079678433 has 2 divisors, whose sum is σ = 38777079678434. Its totient is φ = 38777079678432.

The previous prime is 38777079678431. The next prime is 38777079678563. The reversal of 38777079678433 is 33487697077783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25595990325504 + 13181089352929 = 5059248^2 + 3630577^2 .

It is a cyclic number.

It is not a de Polignac number, because 38777079678433 - 2¹ = 38777079678431 is a prime.

Together with 38777079678431, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (38777079678431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19388539839216 + 19388539839217.

It is an arithmetic number, because the mean of its divisors is an integer number (19388539839217).

Almost surely, 2^{38777079678433} is an apocalyptic number.

It is an amenable number.

38777079678433 is a deficient number, since it is larger than the sum of its proper divisors (1).

38777079678433 is an equidigital number, since it uses as much as digits as its factorization.

38777079678433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6273179136, while the sum is 79.

The spelling of 38777079678433 in words is "thirty-eight trillion, seven hundred seventy-seven billion, seventy-nine million, six hundred seventy-eight thousand, four hundred thirty-three".