39162072973 has 2 divisors, whose sum is σ = 39162072974. Its totient is φ = 39162072972.

The previous prime is 39162072953. The next prime is 39162072979. The reversal of 39162072973 is 37927026193.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39110204169 + 51868804 = 197763^2 + 7202^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39162072973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39162072979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19581036486 + 19581036487.

It is an arithmetic number, because the mean of its divisors is an integer number (19581036487).

Almost surely, 2^39162072973 is an apocalyptic number.

It is an amenable number.

39162072973 is a deficient number, since it is larger than the sum of its proper divisors (1).

39162072973 is an equidigital number, since it uses as much as digits as its factorization.

39162072973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 857304, while the sum is 49.

The spelling of 39162072973 in words is "thirty-nine billion, one hundred sixty-two million, seventy-two thousand, nine hundred seventy-three".