39612600641 has 2 divisors, whose sum is σ = 39612600642. Its totient is φ = 39612600640.

The previous prime is 39612600619. The next prime is 39612600679. The reversal of 39612600641 is 14600621693.

It is an a-pointer prime, because the next prime (39612600679) can be obtained adding 39612600641 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37752490000 + 1860110641 = 194300^2 + 43129^2 .

It is a cyclic number.

It is not a de Polignac number, because 39612600641 - 2¹⁰ = 39612599617 is a prime.

It is a super-2 number, since 2×39612600641² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 39612600595 and 39612600604.

It is not a weakly prime, because it can be changed into another prime (39612600691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19806300320 + 19806300321.

It is an arithmetic number, because the mean of its divisors is an integer number (19806300321).

Almost surely, 2^39612600641 is an apocalyptic number.

It is an amenable number.

39612600641 is a deficient number, since it is larger than the sum of its proper divisors (1).

39612600641 is an equidigital number, since it uses as much as digits as its factorization.

39612600641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 39612600641 in words is "thirty-nine billion, six hundred twelve million, six hundred thousand, six hundred forty-one".