39694741601 has 2 divisors, whose sum is σ = 39694741602. Its totient is φ = 39694741600.

The previous prime is 39694741591. The next prime is 39694741633. The reversal of 39694741601 is 10614749693.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31692544576 + 8002197025 = 178024^2 + 89455^2 .

It is an emirp because it is prime and its reverse (10614749693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39694741601 - 2¹⁰ = 39694740577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39694741601.

It is not a weakly prime, because it can be changed into another prime (39694741001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19847370800 + 19847370801.

It is an arithmetic number, because the mean of its divisors is an integer number (19847370801).

Almost surely, 2^39694741601 is an apocalyptic number.

It is an amenable number.

39694741601 is a deficient number, since it is larger than the sum of its proper divisors (1).

39694741601 is an equidigital number, since it uses as much as digits as its factorization.

39694741601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 39694741601 in words is "thirty-nine billion, six hundred ninety-four million, seven hundred forty-one thousand, six hundred one".