39077819529797 has 2 divisors, whose sum is σ = 39077819529798. Its totient is φ = 39077819529796.

The previous prime is 39077819529781. The next prime is 39077819529809. The reversal of 39077819529797 is 79792591877093.

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., 21939097198561 + 17138722331236 = 4683919^2 + 4139894^2 .

It is a cyclic number.

It is not a de Polignac number, because 39077819529797 - 2⁴ = 39077819529781 is a prime.

It is a super-2 number, since 2×39077819529797² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39077819529737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19538909764898 + 19538909764899.

It is an arithmetic number, because the mean of its divisors is an integer number (19538909764899).

Almost surely, 2^{39077819529797} is an apocalyptic number.

It is an amenable number.

39077819529797 is a deficient number, since it is larger than the sum of its proper divisors (1).

39077819529797 is an equidigital number, since it uses as much as digits as its factorization.

39077819529797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780710640, while the sum is 83.

The spelling of 39077819529797 in words is "thirty-nine trillion, seventy-seven billion, eight hundred nineteen million, five hundred twenty-nine thousand, seven hundred ninety-seven".