38648644079 has 2 divisors, whose sum is σ = 38648644080. Its totient is φ = 38648644078.

The previous prime is 38648644007. The next prime is 38648644103. The reversal of 38648644079 is 97044684683.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38648644079 is a prime.

It is a super-3 number, since 3×38648644079³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38648649079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19324322039 + 19324322040.

It is an arithmetic number, because the mean of its divisors is an integer number (19324322040).

Almost surely, 2^38648644079 is an apocalyptic number.

38648644079 is a deficient number, since it is larger than the sum of its proper divisors (1).

38648644079 is an equidigital number, since it uses as much as digits as its factorization.

38648644079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27869184, while the sum is 59.

The spelling of 38648644079 in words is "thirty-eight billion, six hundred forty-eight million, six hundred forty-four thousand, seventy-nine".