39820111110061 has 2 divisors, whose sum is σ = 39820111110062. Its totient is φ = 39820111110060.

The previous prime is 39820111110047. The next prime is 39820111110107. The reversal of 39820111110061 is 16001111102893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36015001562500 + 3805109547561 = 6001250^2 + 1950669^2 .

It is a cyclic number.

It is not a de Polignac number, because 39820111110061 - 2⁵ = 39820111110029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39820111109999 and 39820111110026.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39820111110011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19910055555030 + 19910055555031.

It is an arithmetic number, because the mean of its divisors is an integer number (19910055555031).

Almost surely, 2^{39820111110061} is an apocalyptic number.

It is an amenable number.

39820111110061 is a deficient number, since it is larger than the sum of its proper divisors (1).

39820111110061 is an equidigital number, since it uses as much as digits as its factorization.

39820111110061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 34.

The spelling of 39820111110061 in words is "thirty-nine trillion, eight hundred twenty billion, one hundred eleven million, one hundred ten thousand, sixty-one".