38317750643 has 2 divisors, whose sum is σ = 38317750644. Its totient is φ = 38317750642.

The previous prime is 38317750621. The next prime is 38317750693. The reversal of 38317750643 is 34605771383.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38317750643 - 2⁶ = 38317750579 is a prime.

It is not a weakly prime, because it can be changed into another prime (38317750613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19158875321 + 19158875322.

It is an arithmetic number, because the mean of its divisors is an integer number (19158875322).

Almost surely, 2^38317750643 is an apocalyptic number.

38317750643 is a deficient number, since it is larger than the sum of its proper divisors (1).

38317750643 is an equidigital number, since it uses as much as digits as its factorization.

38317750643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 38317750643 in words is "thirty-eight billion, three hundred seventeen million, seven hundred fifty thousand, six hundred forty-three".