38778819125 has 8 divisors (see below), whose sum is σ = 48395966424. Its totient is φ = 31023055200.

The previous prime is 38778819103. The next prime is 38778819133. The reversal of 38778819125 is 52191887783.

It can be written as a sum of positive squares in 4 ways, for example, as 2572721284 + 36206097841 = 50722^2 + 190279^2 .

It is not a de Polignac number, because 38778819125 - 2⁶ = 38778819061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155115152 + ... + 155115401.

It is an arithmetic number, because the mean of its divisors is an integer number (6049495803).

Almost surely, 2^38778819125 is an apocalyptic number.

It is an amenable number.

38778819125 is a deficient number, since it is larger than the sum of its proper divisors (9617147299).

38778819125 is an equidigital number, since it uses as much as digits as its factorization.

38778819125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310230568 (or 310230558 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 59.

The spelling of 38778819125 in words is "thirty-eight billion, seven hundred seventy-eight million, eight hundred nineteen thousand, one hundred twenty-five".