38497563997 has 2 divisors, whose sum is σ = 38497563998. Its totient is φ = 38497563996.

The previous prime is 38497563983. The next prime is 38497564051. The reversal of 38497563997 is 79936579483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23246795961 + 15250768036 = 152469^2 + 123494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38497563997 is a prime.

It is a super-2 number, since 2×38497563997² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38497563977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19248781998 + 19248781999.

It is an arithmetic number, because the mean of its divisors is an integer number (19248781999).

Almost surely, 2^38497563997 is an apocalyptic number.

It is an amenable number.

38497563997 is a deficient number, since it is larger than the sum of its proper divisors (1).

38497563997 is an equidigital number, since it uses as much as digits as its factorization.

38497563997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 308629440, while the sum is 70.

The spelling of 38497563997 in words is "thirty-eight billion, four hundred ninety-seven million, five hundred sixty-three thousand, nine hundred ninety-seven".