37221760649 has 2 divisors, whose sum is σ = 37221760650. Its totient is φ = 37221760648.

The previous prime is 37221760643. The next prime is 37221760673. The reversal of 37221760649 is 94606712273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33012346249 + 4209414400 = 181693^2 + 64880^2 .

It is a cyclic number.

It is not a de Polignac number, because 37221760649 - 2⁸ = 37221760393 is a prime.

It is a super-2 number, since 2×37221760649² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (37221760643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18610880324 + 18610880325.

It is an arithmetic number, because the mean of its divisors is an integer number (18610880325).

Almost surely, 2^37221760649 is an apocalyptic number.

It is an amenable number.

37221760649 is a deficient number, since it is larger than the sum of its proper divisors (1).

37221760649 is an equidigital number, since it uses as much as digits as its factorization.

37221760649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 47.

The spelling of 37221760649 in words is "thirty-seven billion, two hundred twenty-one million, seven hundred sixty thousand, six hundred forty-nine".