39968292577 has 2 divisors, whose sum is σ = 39968292578. Its totient is φ = 39968292576.

The previous prime is 39968292563. The next prime is 39968292583. The reversal of 39968292577 is 77529286993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20701742161 + 19266550416 = 143881^2 + 138804^2 .

It is a cyclic number.

It is not a de Polignac number, because 39968292577 - 2¹¹ = 39968290529 is a prime.

It is not a weakly prime, because it can be changed into another prime (39968292877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19984146288 + 19984146289.

It is an arithmetic number, because the mean of its divisors is an integer number (19984146289).

Almost surely, 2^39968292577 is an apocalyptic number.

It is an amenable number.

39968292577 is a deficient number, since it is larger than the sum of its proper divisors (1).

39968292577 is an equidigital number, since it uses as much as digits as its factorization.

39968292577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102876480, while the sum is 67.

The spelling of 39968292577 in words is "thirty-nine billion, nine hundred sixty-eight million, two hundred ninety-two thousand, five hundred seventy-seven".