38755805779 has 2 divisors, whose sum is σ = 38755805780. Its totient is φ = 38755805778.

The previous prime is 38755805707. The next prime is 38755805789. The reversal of 38755805779 is 97750855783.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38755805779 - 2⁷ = 38755805651 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38755805779.

It is not a weakly prime, because it can be changed into another prime (38755805789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19377902889 + 19377902890.

It is an arithmetic number, because the mean of its divisors is an integer number (19377902890).

Almost surely, 2^38755805779 is an apocalyptic number.

38755805779 is a deficient number, since it is larger than the sum of its proper divisors (1).

38755805779 is an equidigital number, since it uses as much as digits as its factorization.

38755805779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74088000, while the sum is 64.

The spelling of 38755805779 in words is "thirty-eight billion, seven hundred fifty-five million, eight hundred five thousand, seven hundred seventy-nine".