37215765973 has 2 divisors, whose sum is σ = 37215765974. Its totient is φ = 37215765972.

The previous prime is 37215765941. The next prime is 37215765991. The reversal of 37215765973 is 37956751273.

37215765973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37149864049 + 65901924 = 192743^2 + 8118^2 .

It is a cyclic number.

It is not a de Polignac number, because 37215765973 - 2⁵ = 37215765941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37215765913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18607882986 + 18607882987.

It is an arithmetic number, because the mean of its divisors is an integer number (18607882987).

Almost surely, 2^37215765973 is an apocalyptic number.

It is an amenable number.

37215765973 is a deficient number, since it is larger than the sum of its proper divisors (1).

37215765973 is an equidigital number, since it uses as much as digits as its factorization.

37215765973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8334900, while the sum is 55.

The spelling of 37215765973 in words is "thirty-seven billion, two hundred fifteen million, seven hundred sixty-five thousand, nine hundred seventy-three".