39953326697 has 2 divisors, whose sum is σ = 39953326698. Its totient is φ = 39953326696.

The previous prime is 39953326691. The next prime is 39953326729. The reversal of 39953326697 is 79662335993.

39953326697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39864514921 + 88811776 = 199661^2 + 9424^2 .

It is a cyclic number.

It is not a de Polignac number, because 39953326697 - 2¹⁸ = 39953064553 is a prime.

It is not a weakly prime, because it can be changed into another prime (39953326691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19976663348 + 19976663349.

It is an arithmetic number, because the mean of its divisors is an integer number (19976663349).

Almost surely, 2^39953326697 is an apocalyptic number.

It is an amenable number.

39953326697 is a deficient number, since it is larger than the sum of its proper divisors (1).

39953326697 is an equidigital number, since it uses as much as digits as its factorization.

39953326697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49601160, while the sum is 62.

The spelling of 39953326697 in words is "thirty-nine billion, nine hundred fifty-three million, three hundred twenty-six thousand, six hundred ninety-seven".