38646733577 has 2 divisors, whose sum is σ = 38646733578. Its totient is φ = 38646733576.

The previous prime is 38646733553. The next prime is 38646733673. The reversal of 38646733577 is 77533764683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29922426361 + 8724307216 = 172981^2 + 93404^2 .

It is a cyclic number.

It is not a de Polignac number, because 38646733577 - 2²⁴ = 38629956361 is a prime.

It is not a weakly prime, because it can be changed into another prime (38646732577) 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, 19323366788 + 19323366789.

It is an arithmetic number, because the mean of its divisors is an integer number (19323366789).

Almost surely, 2^38646733577 is an apocalyptic number.

It is an amenable number.

38646733577 is a deficient number, since it is larger than the sum of its proper divisors (1).

38646733577 is an equidigital number, since it uses as much as digits as its factorization.

38646733577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53343360, while the sum is 59.

The spelling of 38646733577 in words is "thirty-eight billion, six hundred forty-six million, seven hundred thirty-three thousand, five hundred seventy-seven".