39873682361 has 2 divisors, whose sum is σ = 39873682362. Its totient is φ = 39873682360.

The previous prime is 39873682351. The next prime is 39873682369. The reversal of 39873682361 is 16328637893.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32515302400 + 7358379961 = 180320^2 + 85781^2 .

It is a cyclic number.

It is not a de Polignac number, because 39873682361 - 2⁶ = 39873682297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39873682297 and 39873682306.

It is not a weakly prime, because it can be changed into another prime (39873682369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19936841180 + 19936841181.

It is an arithmetic number, because the mean of its divisors is an integer number (19936841181).

Almost surely, 2^39873682361 is an apocalyptic number.

It is an amenable number.

39873682361 is a deficient number, since it is larger than the sum of its proper divisors (1).

39873682361 is an equidigital number, since it uses as much as digits as its factorization.

39873682361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 56.

The spelling of 39873682361 in words is "thirty-nine billion, eight hundred seventy-three million, six hundred eighty-two thousand, three hundred sixty-one".