37325209921 has 2 divisors, whose sum is σ = 37325209922. Its totient is φ = 37325209920.

The previous prime is 37325209897. The next prime is 37325209939. The reversal of 37325209921 is 12990252373.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36282630400 + 1042579521 = 190480^2 + 32289^2 .

It is a cyclic number.

It is not a de Polignac number, because 37325209921 - 2¹³ = 37325201729 is a prime.

It is not a weakly prime, because it can be changed into another prime (37325209981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18662604960 + 18662604961.

It is an arithmetic number, because the mean of its divisors is an integer number (18662604961).

Almost surely, 2^37325209921 is an apocalyptic number.

It is an amenable number.

37325209921 is a deficient number, since it is larger than the sum of its proper divisors (1).

37325209921 is an equidigital number, since it uses as much as digits as its factorization.

37325209921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 43.

The spelling of 37325209921 in words is "thirty-seven billion, three hundred twenty-five million, two hundred nine thousand, nine hundred twenty-one".