38817513035557 has 2 divisors, whose sum is σ = 38817513035558. Its totient is φ = 38817513035556.

The previous prime is 38817513035489. The next prime is 38817513035603. The reversal of 38817513035557 is 75553031571883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31583489566561 + 7234023468996 = 5619919^2 + 2689614^2 .

It is a cyclic number.

It is not a de Polignac number, because 38817513035557 - 2⁴³ = 30021420013349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38817513035495 and 38817513035504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38817513035057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19408756517778 + 19408756517779.

It is an arithmetic number, because the mean of its divisors is an integer number (19408756517779).

Almost surely, 2^{38817513035557} is an apocalyptic number.

It is an amenable number.

38817513035557 is a deficient number, since it is larger than the sum of its proper divisors (1).

38817513035557 is an equidigital number, since it uses as much as digits as its factorization.

38817513035557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920000, while the sum is 61.

The spelling of 38817513035557 in words is "thirty-eight trillion, eight hundred seventeen billion, five hundred thirteen million, thirty-five thousand, five hundred fifty-seven".