38617795427 has 2 divisors, whose sum is σ = 38617795428. Its totient is φ = 38617795426.

The previous prime is 38617795421. The next prime is 38617795429. The reversal of 38617795427 is 72459771683.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38617795427 - 2³⁴ = 21437926243 is a prime.

It is a super-2 number, since 2×38617795427² (a number of 22 digits) contains 22 as substring.

Together with 38617795429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38617795421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19308897713 + 19308897714.

It is an arithmetic number, because the mean of its divisors is an integer number (19308897714).

Almost surely, 2^38617795427 is an apocalyptic number.

38617795427 is a deficient number, since it is larger than the sum of its proper divisors (1).

38617795427 is an equidigital number, since it uses as much as digits as its factorization.

38617795427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17781120, while the sum is 59.

The spelling of 38617795427 in words is "thirty-eight billion, six hundred seventeen million, seven hundred ninety-five thousand, four hundred twenty-seven".