38661780523 has 2 divisors, whose sum is σ = 38661780524. Its totient is φ = 38661780522.

The previous prime is 38661780491. The next prime is 38661780557. The reversal of 38661780523 is 32508716683.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38661780523 - 2⁵ = 38661780491 is a prime.

It is not a weakly prime, because it can be changed into another prime (38661780823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19330890261 + 19330890262.

It is an arithmetic number, because the mean of its divisors is an integer number (19330890262).

Almost surely, 2^38661780523 is an apocalyptic number.

38661780523 is a deficient number, since it is larger than the sum of its proper divisors (1).

38661780523 is an equidigital number, since it uses as much as digits as its factorization.

38661780523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 38661780523 in words is "thirty-eight billion, six hundred sixty-one million, seven hundred eighty thousand, five hundred twenty-three".