38256553649 has 2 divisors, whose sum is σ = 38256553650. Its totient is φ = 38256553648.

The previous prime is 38256553631. The next prime is 38256553679. The reversal of 38256553649 is 94635565283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37947040000 + 309513649 = 194800^2 + 17593^2 .

It is a cyclic number.

It is not a de Polignac number, because 38256553649 - 2¹² = 38256549553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38256553594 and 38256553603.

It is not a weakly prime, because it can be changed into another prime (38256553679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19128276824 + 19128276825.

It is an arithmetic number, because the mean of its divisors is an integer number (19128276825).

Almost surely, 2^38256553649 is an apocalyptic number.

It is an amenable number.

38256553649 is a deficient number, since it is larger than the sum of its proper divisors (1).

38256553649 is an equidigital number, since it uses as much as digits as its factorization.

38256553649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328000, while the sum is 56.

The spelling of 38256553649 in words is "thirty-eight billion, two hundred fifty-six million, five hundred fifty-three thousand, six hundred forty-nine".